Kindergarten Spring Math — Compose/Decompose to 10, Addition & Subtraction within 10, Teen Numbers as Ten-and-Ones, Measurement, and Classification
Math · DS
K
math.gK.s.ds.classify_count_categories
Classify objects into categories and count the number of objects in each category (K.MD.B.3)
Sort a small collection (up to 10 objects) into 2 or 3 given categories based on a single attribute (color, shape, size, type), then count the number of objects in each category. Record the category counts on a tally chart or pictograph. Compare category counts: which category has more? Which has the most/fewest? This is the seed of categorical data and the first taste of statistical work.
Mastery threshold
90%
Min instances
10
Typical minutes
25
Spaced intervals (days)
1, 3, 7, 14, 30, 60
Prereqs
- Cardinality — the last number said names the total count (CCSS K.CC.B.4)
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math.gK.f.ds.sort_classify_one_attribute
(not yet loaded)
Successors
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math.g1.s.ds.categorical_data
(not yet loaded)
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math.g1.s.ds.picture_graphs_bar_graphs
(not yet loaded)
Common misconceptions
- Sorts by an unintended attribute (asked to sort by color, sorts by size).
- Double-counts an object that fits multiple categories when categories overlap (the K-version uses non-overlapping single-attribute categories to avoid this).
- Reports total objects when asked for category counts (gives 10 instead of 4-3-3).
- Cannot identify the category with the most without recounting (does not compare counts mentally).
- Confuses 'how many in each' with 'how many in all.'