{"schema_version":"teacher-skill-representation.payload.v1","representation":{"schema_version":"teacher-skill-representation.v1","skill_ref":"count.compare.objects.to-20","domain_slug":"count","skill_slug":"compare-objects-to-20","canonical_url":"/math/skills/count/compare-objects-to-20","public_title":"Comparing sets to 20","family_ref":"module-family.count.quantity-comparison-order.v1","family_name":"Quantity Comparison and Order Reasoning","pattern_cluster_refs":["pattern-cluster.quantity.visible-set-comparison.v1","pattern-cluster.quantity.representation-transfer.v1"],"task_pattern_refs":["task-pattern.quantity.visible-set-compare-to-20.v1","task-pattern.quantity.visible-residue-difference-to-20.v1","task-pattern.quantity.visible-difference-amount-to-20.v1","task-pattern.quantity.one-to-one-pairing-proof-to-20.v1","task-pattern.quantity.conservation-invariance-compare-to-20.v1","task-pattern.quantity.cross-representation-relation-transfer-to-100.v1","task-pattern.quantity.comparison-proof-card-selection.v1"],"task_form_refs":["task-form.quantity.object-set-compare-choice.v1","task-form.quantity.extra-object-residue-mark.v1","task-form.quantity.difference-amount-relation-choice.v1","task-form.quantity.object-pair-proof-builder.v1","task-form.quantity.conservation-transform-relation-choice.v1","task-form.quantity.cross-representation-relation-match.v1","task-form.quantity.comparison-proof-card-choice.v1"],"teacher_summary":"Comparing sets to 20 builds quantity comparison and order reasoning through visual tasks, examples, and next-step routes.","teacher_explanation_md":"Given two visible groups with at most 20 objects each, decide which group has more, fewer, or the same amount using matching, counting, or grouping.","child_surface_summary_md":"Children may meet this skill through task formats such as Object-set compare choice, Extra-object residue mark, Difference amount and relation choice, Object-pair proof builder, Conservation transform relation choice, Cross-representation relation match, Comparison proof-card choice.","common_mistake_tags":["Treats a physically longer spread as the larger group."],"hint_reveal_summary_md":"Hints keep the child oriented to the visible structure; reveals show the path without counting as independent evidence.","adaptation_summary_md":"Fresh independent work can move the child toward Core, Transfer, or Challenge routes; help use or confusion keeps support visible.","route_variant_refs":["support_repair","core","stretch_transfer","challenge_ready"],"age_band_refs":["age_6_7","age_8_9","age_10_11"],"practice_focus_refs":["practice-focus.balanced.v1","practice-focus.number-sense-place-value.v1"],"standards_refs":["us_ccss:CCSS.K.CC.C.6","uk_england_nc:UK-NC-Y1-number-compare"],"school_program_refs":["us_ccss","uk_england_nc"],"challenge_refs":["challenge.count.compare.objects.to-20"],"story_fit_tags":["episodes where compare visible object sets to 20, identify exact visible difference, prove relation by pairing, and preserve relation under conservation lures.","episodes where preserve the same quantity relation across visible sets, numerals, symbols, number lines, bounds, and proof cards."],"prerequisite_skill_refs":[],"next_skill_refs":["count.number-line.whole.to-100","count.order-numbers.to-20"],"next_family_refs":["module-family.count.cardinality-foundations.v1","module-family.nbt.base-ten-place-value.v1","module-family.oa.whole-number-operations-fluency.v1","module-family.oa.models-word-problems.v1","module-family.data.classification-tables-graphs.v1","module-family.frac.parts-wholes-fair-shares.v1","module-family.frac.equivalence-comparison-operations.v1","module-family.dec.decimal-percent-reasoning.v1","module-family.measure.units-tools-time-money.v1","module-family.measure.geometric-measurement.v1","module-family.geom.shape-attributes-classification.v1","module-family.geom.spatial-transformations-coordinates.v1","module-family.pattern.functions-generalization.v1","module-family.prealg.equations-expressions-inequalities.v1","module-family.prealg.ratio-rate-scaling.v1","module-family.logic.constraint-deduction-combinatorics.v1"],"public_example_refs":[],"retrieval":{"aliases":["Comparing sets to 20","count.compare.objects.to-20","Quantity Comparison and Order Reasoning","Object-set compare choice","Extra-object residue mark","Difference amount and relation choice","Object-pair proof builder","Conservation transform relation choice","Cross-representation relation match","Comparison proof-card choice"],"teacher_questions":["What does Comparing sets to 20 mean?","How does Comparing sets to 20 adapt for my child?","Can I see an example of Comparing sets to 20?"],"keywords":["comparing sets to 20","count","compare-objects-to-20","quantity comparison and order reasoning","task-form.quantity.object-set-compare-choice.v1","task-form.quantity.extra-object-residue-mark.v1","task-form.quantity.difference-amount-relation-choice.v1","task-form.quantity.object-pair-proof-builder.v1","task-form.quantity.conservation-transform-relation-choice.v1","task-form.quantity.cross-representation-relation-match.v1","task-form.quantity.comparison-proof-card-choice.v1"],"short_answer_public":"Comparing sets to 20 builds quantity comparison and order reasoning through visual tasks, examples, and next-step routes.","canonical_links":[{"label":"Comparing sets to 20","url":"/math/skills/count/compare-objects-to-20"}],"safe_to_quote_snippets":["Comparing sets to 20 builds quantity comparison and order reasoning through visual tasks, examples, and next-step routes."],"example_refs":[]}},"task_forms":[{"schema_version":"task-form-representation.v1","task_form_ref":"task-form.quantity.comparison-proof-card-choice.v1","public_slug":"comparison-proof-card-choice","owning_skill_refs":["count.compare.objects.to-20","count.compare-numbers.to-100","count.number-line.whole.to-100"],"primary_family_ref":"module-family.count.quantity-comparison-order.v1","pattern_cluster_ref":"pattern-cluster.quantity.representation-transfer.v1","task_pattern_ref":"task-pattern.quantity.comparison-proof-card-selection.v1","public_title":"Comparison proof-card choice","teacher_summary":"Comparison proof-card choice asks children to choose the proof card that correctly justifies a comparison.","teacher_purpose_md":"Choose the proof card/artifact that justifies a direct quantity relation.","child_action_public":"Choose the proof card that correctly justifies a comparison.","answer_affordance_public":"Choose the answer that matches the visible prompt.","visual_primitive_public_refs":["answer_relation_card","pairing_proof_card","residue_proof_card","number_line_proof_card","benchmark_proof_card","conservation_proof_card"],"child_surface_preview":{"availability":"not_available","preview_asset_refs":[],"absence_md":""},"public_example_refs":[],"non_example_refs":[],"common_mistake_tags":[],"hint_reveal_public":["Hints should point attention to the visible structure before giving away the solution.","Reveals should show the answer path separately from independent evidence."],"public_evidence_signals":[{"id":"check_only","public_label":"Check only","teacher_note_md":"This observation can check the session without moving the child forward by itself."}],"route_variants":[{"id":"support_repair","public_label":"Support","teacher_note_md":"Use a more guided version when recent work shows confusion or heavy help use."},{"id":"core","public_label":"Core","teacher_note_md":"Use the normal version when the child solves fresh examples steadily."},{"id":"stretch_transfer","public_label":"Transfer","teacher_note_md":"Change representation or context after independent evidence stays strong."}],"age_presentation_differences":[{"id":"age_6_7","public_label":"6-7","teacher_note_md":"Use concrete objects, short prompts, and more visible support."},{"id":"age_8_9","public_label":"8-9","teacher_note_md":"Use the same idea with more independent reading and representation."},{"id":"age_10_11","public_label":"10-11","teacher_note_md":"Keep the presentation older and allow explanation, proof, and transfer when evidence supports it."}],"practice_focus_compatibility":[{"id":"practice-focus.number-sense-place-value.v1","public_label":"Number sense and place value","teacher_note_md":"Schedule place-value or comparison review when the story lane is incompatible."}],"challenge_enrichment_public":[],"story_fit_public":["episodes where preserve the same quantity relation across visible sets, numerals, symbols, number lines, bounds, and proof cards.","Story object role: object set card.","Story object role: numeral card.","Story object role: symbol badge.","Story object role: number-line point.","Story object role: bound card."],"retrieval":{"aliases":["Comparison proof-card choice","task-form.quantity.comparison-proof-card-choice.v1","comparison_proof_card_choice","answer_relation_card","pairing_proof_card","residue_proof_card","number_line_proof_card","benchmark_proof_card","conservation_proof_card"],"teacher_questions":["What does Comparison proof-card choice mean?","How does Comparison proof-card choice adapt for my child?","Can I see an example of Comparison proof-card choice?"],"keywords":["comparison proof-card choice","comparison_proof_card_choice","count.compare.objects.to-20","count.compare-numbers.to-100","count.number-line.whole.to-100"],"short_answer_public":"Comparison proof-card choice asks children to choose the proof card that correctly justifies a comparison.","canonical_links":[{"label":"Comparison proof-card choice","url":"#taskform-comparison-proof-card-choice"}],"safe_to_quote_snippets":["Comparison proof-card choice asks children to choose the proof card that correctly justifies a comparison."],"example_refs":[]}},{"schema_version":"task-form-representation.v1","task_form_ref":"task-form.quantity.conservation-transform-relation-choice.v1","public_slug":"conservation-transform-relation-choice","owning_skill_refs":["count.compare.objects.to-20"],"primary_family_ref":"module-family.count.quantity-comparison-order.v1","pattern_cluster_ref":"pattern-cluster.quantity.visible-set-comparison.v1","task_pattern_ref":"task-pattern.quantity.conservation-invariance-compare-to-20.v1","public_title":"Conservation transform relation choice","teacher_summary":"Conservation transform relation choice asks children to inspect before/after transformation and choose relation/reason.","teacher_purpose_md":"Decide relation after rearrangement, spread, grouping, or object-size transformation and justify invariant quantity.","child_action_public":"Inspect before/after transformation and choose relation/reason.","answer_affordance_public":"Choose the answer that matches the visible prompt.","visual_primitive_public_refs":["before_after_cards","object_identity_marks","relation_chips","reason_chips"],"child_surface_preview":{"availability":"not_available","preview_asset_refs":[],"absence_md":""},"public_example_refs":[],"non_example_refs":[],"common_mistake_tags":[],"hint_reveal_public":["Hints should point attention to the visible structure before giving away the solution.","Reveals should show the answer path separately from independent evidence."],"public_evidence_signals":[{"id":"check_only","public_label":"Check only","teacher_note_md":"This observation can check the session without moving the child forward by itself."}],"route_variants":[{"id":"support_repair","public_label":"Support","teacher_note_md":"Use a more guided version when recent work shows confusion or heavy help use."},{"id":"core","public_label":"Core","teacher_note_md":"Use the normal version when the child solves fresh examples steadily."},{"id":"stretch_transfer","public_label":"Transfer","teacher_note_md":"Change representation or context after independent evidence stays strong."}],"age_presentation_differences":[{"id":"age_6_7","public_label":"6-7","teacher_note_md":"Use concrete objects, short prompts, and more visible support."},{"id":"age_8_9","public_label":"8-9","teacher_note_md":"Use the same idea with more independent reading and representation."},{"id":"age_10_11","public_label":"10-11","teacher_note_md":"Keep the presentation older and allow explanation, proof, and transfer when evidence supports it."}],"practice_focus_compatibility":[{"id":"practice-focus.number-sense-place-value.v1","public_label":"Number sense and place value","teacher_note_md":"Schedule place-value or comparison review when the story lane is incompatible."}],"challenge_enrichment_public":[],"story_fit_public":["episodes where compare visible object sets to 20, identify exact visible difference, prove relation by pairing, and preserve relation under conservation lures.","Story object role: left group.","Story object role: right group.","Story object role: same bridge.","Story object role: residue marks.","Story object role: pairing line."],"retrieval":{"aliases":["Conservation transform relation choice","task-form.quantity.conservation-transform-relation-choice.v1","conservation_relation_choice_with_reason","before_after_cards","object_identity_marks","relation_chips","reason_chips"],"teacher_questions":["What does Conservation transform relation choice mean?","How does Conservation transform relation choice adapt for my child?","Can I see an example of Conservation transform relation choice?"],"keywords":["conservation transform relation choice","conservation_relation_choice_with_reason","count.compare.objects.to-20"],"short_answer_public":"Conservation transform relation choice asks children to inspect before/after transformation and choose relation/reason.","canonical_links":[{"label":"Conservation transform relation choice","url":"#taskform-conservation-transform-relation-choice"}],"safe_to_quote_snippets":["Conservation transform relation choice asks children to inspect before/after transformation and choose relation/reason."],"example_refs":[]}},{"schema_version":"task-form-representation.v1","task_form_ref":"task-form.quantity.cross-representation-relation-match.v1","public_slug":"cross-representation-relation-match","owning_skill_refs":["count.compare.objects.to-20","count.compare-numbers.to-100","count.number-line.whole.to-100","count.order-numbers.to-20"],"primary_family_ref":"module-family.count.quantity-comparison-order.v1","pattern_cluster_ref":"pattern-cluster.quantity.representation-transfer.v1","task_pattern_ref":"task-pattern.quantity.cross-representation-relation-transfer-to-100.v1","public_title":"Cross-representation relation match","teacher_summary":"Cross-representation relation match asks children to match the same relation across representations.","teacher_purpose_md":"Match or compare the same whole-number relation across visible set, numeral, symbol, number-line, or bound representation.","child_action_public":"Match the same relation across representations.","answer_affordance_public":"Complete the cross-representation relation match action.","visual_primitive_public_refs":["object_set_card","numeral_card","symbol_badge","number_line_point","bound_card","match_tray"],"child_surface_preview":{"availability":"not_available","preview_asset_refs":[],"absence_md":""},"public_example_refs":[],"non_example_refs":[],"common_mistake_tags":[],"hint_reveal_public":["Hints should point attention to the visible structure before giving away the solution.","Reveals should show the answer path separately from independent evidence."],"public_evidence_signals":[{"id":"check_only","public_label":"Check only","teacher_note_md":"This observation can check the session without moving the child forward by itself."}],"route_variants":[{"id":"support_repair","public_label":"Support","teacher_note_md":"Use a more guided version when recent work shows confusion or heavy help use."},{"id":"core","public_label":"Core","teacher_note_md":"Use the normal version when the child solves fresh examples steadily."},{"id":"stretch_transfer","public_label":"Transfer","teacher_note_md":"Change representation or context after independent evidence stays strong."}],"age_presentation_differences":[{"id":"age_6_7","public_label":"6-7","teacher_note_md":"Use concrete objects, short prompts, and more visible support."},{"id":"age_8_9","public_label":"8-9","teacher_note_md":"Use the same idea with more independent reading and representation."},{"id":"age_10_11","public_label":"10-11","teacher_note_md":"Keep the presentation older and allow explanation, proof, and transfer when evidence supports it."}],"practice_focus_compatibility":[{"id":"practice-focus.number-sense-place-value.v1","public_label":"Number sense and place value","teacher_note_md":"Schedule place-value or comparison review when the story lane is incompatible."}],"challenge_enrichment_public":[],"story_fit_public":["episodes where preserve the same quantity relation across visible sets, numerals, symbols, number lines, bounds, and proof cards.","Story object role: object set card.","Story object role: numeral card.","Story object role: symbol badge.","Story object role: number-line point.","Story object role: bound card."],"retrieval":{"aliases":["Cross-representation relation match","task-form.quantity.cross-representation-relation-match.v1","comparison_relation_representation_match","object_set_card","numeral_card","symbol_badge","number_line_point","bound_card","match_tray"],"teacher_questions":["What does Cross-representation relation match mean?","How does Cross-representation relation match adapt for my child?","Can I see an example of Cross-representation relation match?"],"keywords":["cross-representation relation match","comparison_relation_representation_match","count.compare.objects.to-20","count.compare-numbers.to-100","count.number-line.whole.to-100","count.order-numbers.to-20"],"short_answer_public":"Cross-representation relation match asks children to match the same relation across representations.","canonical_links":[{"label":"Cross-representation relation match","url":"#taskform-cross-representation-relation-match"}],"safe_to_quote_snippets":["Cross-representation relation match asks children to match the same relation across representations."],"example_refs":[]}},{"schema_version":"task-form-representation.v1","task_form_ref":"task-form.quantity.difference-amount-relation-choice.v1","public_slug":"difference-amount-and-relation-choice","owning_skill_refs":["count.compare.objects.to-20"],"primary_family_ref":"module-family.count.quantity-comparison-order.v1","pattern_cluster_ref":"pattern-cluster.quantity.visible-set-comparison.v1","task_pattern_ref":"task-pattern.quantity.visible-difference-amount-to-20.v1","public_title":"Difference amount and relation choice","teacher_summary":"Difference amount and relation choice asks children to choose a relation-and-amount chip, such as left has 3 more.","teacher_purpose_md":"Choose or state how many more/fewer from the visible residue, including amount zero.","child_action_public":"Choose a relation-and-amount chip, such as left has 3 more.","answer_affordance_public":"Choose the answer that matches the visible prompt.","visual_primitive_public_refs":["object_sets","residue_highlight","amount_chips","direction_chips"],"child_surface_preview":{"availability":"not_available","preview_asset_refs":[],"absence_md":""},"public_example_refs":[],"non_example_refs":[],"common_mistake_tags":[],"hint_reveal_public":["Hints should point attention to the visible structure before giving away the solution.","Reveals should show the answer path separately from independent evidence."],"public_evidence_signals":[{"id":"check_only","public_label":"Check only","teacher_note_md":"This observation can check the session without moving the child forward by itself."}],"route_variants":[{"id":"support_repair","public_label":"Support","teacher_note_md":"Use a more guided version when recent work shows confusion or heavy help use."},{"id":"core","public_label":"Core","teacher_note_md":"Use the normal version when the child solves fresh examples steadily."},{"id":"stretch_transfer","public_label":"Transfer","teacher_note_md":"Change representation or context after independent evidence stays strong."}],"age_presentation_differences":[{"id":"age_6_7","public_label":"6-7","teacher_note_md":"Use concrete objects, short prompts, and more visible support."},{"id":"age_8_9","public_label":"8-9","teacher_note_md":"Use the same idea with more independent reading and representation."},{"id":"age_10_11","public_label":"10-11","teacher_note_md":"Keep the presentation older and allow explanation, proof, and transfer when evidence supports it."}],"practice_focus_compatibility":[{"id":"practice-focus.number-sense-place-value.v1","public_label":"Number sense and place value","teacher_note_md":"Schedule place-value or comparison review when the story lane is incompatible."}],"challenge_enrichment_public":[],"story_fit_public":["episodes where compare visible object sets to 20, identify exact visible difference, prove relation by pairing, and preserve relation under conservation lures.","Story object role: left group.","Story object role: right group.","Story object role: same bridge.","Story object role: residue marks.","Story object role: pairing line."],"retrieval":{"aliases":["Difference amount and relation choice","task-form.quantity.difference-amount-relation-choice.v1","difference_amount_relation_choice","object_sets","residue_highlight","amount_chips","direction_chips"],"teacher_questions":["What does Difference amount and relation choice mean?","How does Difference amount and relation choice adapt for my child?","Can I see an example of Difference amount and relation choice?"],"keywords":["difference amount and relation choice","difference_amount_relation_choice","count.compare.objects.to-20"],"short_answer_public":"Difference amount and relation choice asks children to choose a relation-and-amount chip, such as left has 3 more.","canonical_links":[{"label":"Difference amount and relation choice","url":"#taskform-difference-amount-and-relation-choice"}],"safe_to_quote_snippets":["Difference amount and relation choice asks children to choose a relation-and-amount chip, such as left has 3 more."],"example_refs":[]}},{"schema_version":"task-form-representation.v1","task_form_ref":"task-form.quantity.extra-object-residue-mark.v1","public_slug":"extra-object-residue-mark","owning_skill_refs":["count.compare.objects.to-20"],"primary_family_ref":"module-family.count.quantity-comparison-order.v1","pattern_cluster_ref":"pattern-cluster.quantity.visible-set-comparison.v1","task_pattern_ref":"task-pattern.quantity.visible-residue-difference-to-20.v1","public_title":"Extra-object residue mark","teacher_summary":"Extra-object residue mark asks children to mark every unmatched extra object or tap same-zero bridge.","teacher_purpose_md":"Mark exactly the unmatched extra objects in the larger visible group, including same-zero cases.","child_action_public":"Mark every unmatched extra object or tap same-zero bridge.","answer_affordance_public":"Complete the extra-object residue mark action.","visual_primitive_public_refs":["object_sets","residue_marks","same_bridge","pairing_scaffold"],"child_surface_preview":{"availability":"not_available","preview_asset_refs":[],"absence_md":""},"public_example_refs":[],"non_example_refs":[],"common_mistake_tags":[],"hint_reveal_public":["Hints should point attention to the visible structure before giving away the solution.","Reveals should show the answer path separately from independent evidence."],"public_evidence_signals":[{"id":"check_only","public_label":"Check only","teacher_note_md":"This observation can check the session without moving the child forward by itself."}],"route_variants":[{"id":"support_repair","public_label":"Support","teacher_note_md":"Use a more guided version when recent work shows confusion or heavy help use."},{"id":"core","public_label":"Core","teacher_note_md":"Use the normal version when the child solves fresh examples steadily."},{"id":"stretch_transfer","public_label":"Transfer","teacher_note_md":"Change representation or context after independent evidence stays strong."}],"age_presentation_differences":[{"id":"age_6_7","public_label":"6-7","teacher_note_md":"Use concrete objects, short prompts, and more visible support."},{"id":"age_8_9","public_label":"8-9","teacher_note_md":"Use the same idea with more independent reading and representation."},{"id":"age_10_11","public_label":"10-11","teacher_note_md":"Keep the presentation older and allow explanation, proof, and transfer when evidence supports it."}],"practice_focus_compatibility":[{"id":"practice-focus.number-sense-place-value.v1","public_label":"Number sense and place value","teacher_note_md":"Schedule place-value or comparison review when the story lane is incompatible."}],"challenge_enrichment_public":[],"story_fit_public":["episodes where compare visible object sets to 20, identify exact visible difference, prove relation by pairing, and preserve relation under conservation lures.","Story object role: left group.","Story object role: right group.","Story object role: same bridge.","Story object role: residue marks.","Story object role: pairing line."],"retrieval":{"aliases":["Extra-object residue mark","task-form.quantity.extra-object-residue-mark.v1","visible_residue_object_mark","object_sets","residue_marks","same_bridge","pairing_scaffold"],"teacher_questions":["What does Extra-object residue mark mean?","How does Extra-object residue mark adapt for my child?","Can I see an example of Extra-object residue mark?"],"keywords":["extra-object residue mark","visible_residue_object_mark","count.compare.objects.to-20"],"short_answer_public":"Extra-object residue mark asks children to mark every unmatched extra object or tap same-zero bridge.","canonical_links":[{"label":"Extra-object residue mark","url":"#taskform-extra-object-residue-mark"}],"safe_to_quote_snippets":["Extra-object residue mark asks children to mark every unmatched extra object or tap same-zero bridge."],"example_refs":[]}},{"schema_version":"task-form-representation.v1","task_form_ref":"task-form.quantity.object-pair-proof-builder.v1","public_slug":"object-pair-proof-builder","owning_skill_refs":["count.compare.objects.to-20"],"primary_family_ref":"module-family.count.quantity-comparison-order.v1","pattern_cluster_ref":"pattern-cluster.quantity.visible-set-comparison.v1","task_pattern_ref":"task-pattern.quantity.one-to-one-pairing-proof-to-20.v1","public_title":"Object-pair proof builder","teacher_summary":"Object-pair proof builder asks children to build one-to-one pairs, then choose relation.","teacher_purpose_md":"Construct or inspect one-to-one pairs before choosing relation.","child_action_public":"Build one-to-one pairs, then choose relation.","answer_affordance_public":"Complete the object-pair proof builder action.","visual_primitive_public_refs":["object_sets","pair_bridges","used_token_state","relation_choice"],"child_surface_preview":{"availability":"not_available","preview_asset_refs":[],"absence_md":""},"public_example_refs":[],"non_example_refs":[],"common_mistake_tags":[],"hint_reveal_public":["Hints should point attention to the visible structure before giving away the solution.","Reveals should show the answer path separately from independent evidence."],"public_evidence_signals":[{"id":"check_only","public_label":"Check only","teacher_note_md":"This observation can check the session without moving the child forward by itself."}],"route_variants":[{"id":"support_repair","public_label":"Support","teacher_note_md":"Use a more guided version when recent work shows confusion or heavy help use."},{"id":"core","public_label":"Core","teacher_note_md":"Use the normal version when the child solves fresh examples steadily."},{"id":"stretch_transfer","public_label":"Transfer","teacher_note_md":"Change representation or context after independent evidence stays strong."}],"age_presentation_differences":[{"id":"age_6_7","public_label":"6-7","teacher_note_md":"Use concrete objects, short prompts, and more visible support."},{"id":"age_8_9","public_label":"8-9","teacher_note_md":"Use the same idea with more independent reading and representation."},{"id":"age_10_11","public_label":"10-11","teacher_note_md":"Keep the presentation older and allow explanation, proof, and transfer when evidence supports it."}],"practice_focus_compatibility":[{"id":"practice-focus.number-sense-place-value.v1","public_label":"Number sense and place value","teacher_note_md":"Schedule place-value or comparison review when the story lane is incompatible."}],"challenge_enrichment_public":[],"story_fit_public":["episodes where compare visible object sets to 20, identify exact visible difference, prove relation by pairing, and preserve relation under conservation lures.","Story object role: left group.","Story object role: right group.","Story object role: same bridge.","Story object role: residue marks.","Story object role: pairing line."],"retrieval":{"aliases":["Object-pair proof builder","task-form.quantity.object-pair-proof-builder.v1","pair_objects_then_relation","object_sets","pair_bridges","used_token_state","relation_choice"],"teacher_questions":["What does Object-pair proof builder mean?","How does Object-pair proof builder adapt for my child?","Can I see an example of Object-pair proof builder?"],"keywords":["object-pair proof builder","pair_objects_then_relation","count.compare.objects.to-20"],"short_answer_public":"Object-pair proof builder asks children to build one-to-one pairs, then choose relation.","canonical_links":[{"label":"Object-pair proof builder","url":"#taskform-object-pair-proof-builder"}],"safe_to_quote_snippets":["Object-pair proof builder asks children to build one-to-one pairs, then choose relation."],"example_refs":[]}},{"schema_version":"task-form-representation.v1","task_form_ref":"task-form.quantity.object-set-compare-choice.v1","public_slug":"object-set-compare-choice","owning_skill_refs":["count.compare.objects.to-20"],"primary_family_ref":"module-family.count.quantity-comparison-order.v1","pattern_cluster_ref":"pattern-cluster.quantity.visible-set-comparison.v1","task_pattern_ref":"task-pattern.quantity.visible-set-compare-to-20.v1","public_title":"Object-set compare choice","teacher_summary":"Object-set compare choice asks children to choose left set, right set, or same bridge for more/fewer/same.","teacher_purpose_md":"Choose which visible set has more, fewer, or same while resisting spread, side, size, and equality lures.","child_action_public":"Choose left set, right set, or same bridge for more/fewer/same.","answer_affordance_public":"Choose the answer that matches the visible prompt.","visual_primitive_public_refs":["object_sets","same_bridge","pairing_marks"],"child_surface_preview":{"availability":"not_available","preview_asset_refs":[],"absence_md":""},"public_example_refs":[],"non_example_refs":[],"common_mistake_tags":[],"hint_reveal_public":["Hints should point attention to the visible structure before giving away the solution.","Reveals should show the answer path separately from independent evidence."],"public_evidence_signals":[{"id":"independent_solve","public_label":"Independent solve","teacher_note_md":"A fresh correct solve can count toward stronger evidence."},{"id":"supported_solve","public_label":"Supported solve","teacher_note_md":"Help was useful, so the next step should keep support visible."},{"id":"challenge_ready_signal","public_label":"Challenge ready","teacher_note_md":"Strong fresh evidence can open a deeper example when the task form supports it."}],"route_variants":[{"id":"support_repair","public_label":"Support","teacher_note_md":"Use a more guided version when recent work shows confusion or heavy help use."},{"id":"core","public_label":"Core","teacher_note_md":"Use the normal version when the child solves fresh examples steadily."},{"id":"stretch_transfer","public_label":"Transfer","teacher_note_md":"Change representation or context after independent evidence stays strong."},{"id":"challenge_ready","public_label":"Challenge","teacher_note_md":"Offer a deeper reasoning example only when the task form has a real challenge boundary."}],"age_presentation_differences":[{"id":"age_6_7","public_label":"6-7","teacher_note_md":"Use concrete objects, short prompts, and more visible support."},{"id":"age_8_9","public_label":"8-9","teacher_note_md":"Use the same idea with more independent reading and representation."},{"id":"age_10_11","public_label":"10-11","teacher_note_md":"Keep the presentation older and allow explanation, proof, and transfer when evidence supports it."}],"practice_focus_compatibility":[{"id":"practice-focus.number-sense-place-value.v1","public_label":"Number sense and place value","teacher_note_md":"Schedule place-value or comparison review when the story lane is incompatible."}],"challenge_enrichment_public":["Challenge examples must change the reasoning demand, not only make the row busier."],"story_fit_public":["episodes where compare visible object sets to 20, identify exact visible difference, prove relation by pairing, and preserve relation under conservation lures.","Story object role: left group.","Story object role: right group.","Story object role: same bridge.","Story object role: residue marks.","Story object role: pairing line."],"retrieval":{"aliases":["Object-set compare choice","task-form.quantity.object-set-compare-choice.v1","quantity_compare_choice","object_sets","same_bridge","pairing_marks"],"teacher_questions":["What does Object-set compare choice mean?","How does Object-set compare choice adapt for my child?","Can I see an example of Object-set compare choice?"],"keywords":["object-set compare choice","quantity_compare_choice","count.compare.objects.to-20"],"short_answer_public":"Object-set compare choice asks children to choose left set, right set, or same bridge for more/fewer/same.","canonical_links":[{"label":"Object-set compare choice","url":"#taskform-object-set-compare-choice"}],"safe_to_quote_snippets":["Object-set compare choice asks children to choose left set, right set, or same bridge for more/fewer/same."],"example_refs":[]}}],"examples":[],"preview_artifacts":[]}