Kindergarten Spring Math — Compose/Decompose to 10, Addition & Subtraction within 10, Teen Numbers as Ten-and-Ones, Measurement, and Classification
Math · AT
K
math.gK.s.at.word_problems_within_10
Solve addition and subtraction word problems within 10 using objects and drawings (K.OA.A.2, MP.1, MP.4)
Solve four CGI word-problem types within 10 using objects (concrete), drawings (pictorial), and equations (abstract): Join Result Unknown (5 birds in a tree; 3 more come; how many in all?), Separate Result Unknown (8 cookies on a plate; 3 are eaten; how many left?), Part-Part-Whole Whole Unknown (4 red and 3 blue blocks; how many altogether?), and Compare Difference Unknown (Lin has 7 stickers, Sam has 4; how many more does Lin have?). Re-tell the problem in own words before solving (MP.1: make sense of problems). Show the work with drawings and equations (MP.4: model with mathematics).
Mastery threshold
85%
Min instances
16
Typical minutes
30
Spaced intervals (days)
1, 3, 7, 14, 30, 60
Prereqs
Successors
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math.g1.f.at.word_problems_within_20
(not yet loaded)
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math.g1.s.at.cgi_problem_types_extended
(not yet loaded)
Common misconceptions
- Chooses the operation based on keyword ('in all' = add, 'left' = subtract) without understanding the situation — keyword-trap error.
- Adds all numbers seen in the problem regardless of context (e.g., '7 stickers, 4 stickers, how many more?' answered as 11).
- In Compare Difference Unknown, treats it as Part-Part-Whole and adds 7 + 4 = 11.
- Cannot re-tell the story in own words — surface-features-only comprehension.
- Writes an equation that does not match the action of the story (e.g., 8 − 3 = 5 for the bird-joining story).