{"schema_version":"task-form-representation.payload.v1","representation":{"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":[]}},"canonical_target":{"href":"/math/skills/count/compare-objects-to-20#taskform-object-set-compare-choice","skill":{"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 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