standard_description: Partition circles and rectangles into two, three, or four equal shares, describe the shares using the words halves, thirds, half of, a third of, etc., and describe the whole as two halves, three thirds, four fourths. Recognize that equal shares of identical wholes need not have the same shape.
problem_activity: Stage 4: Subtract within 20
Required Preparation
Materials to Gather
Colored pencils or crayons
Number cards 0–10
Paper clips
Materials to Copy
Blackline Masters
Capture Squares Stage 4 Gameboard
Capture Squares Stage 4 Spinner

Narrative
Students spin to get a number (16–20) and flip a card (0–10). They subtract the number on the card from the number on the spinner. The spinner includes a wild space where students can choose their own number.


aligns: no