REGROUPING BIRTHDAYS

REGROUPING BIRTHDAYS is a Grade 2 place-value game that turns birthdays into tens-and-ones representations. A student’s birth month determines a number of tens and the birth day supplies the ones, then classmates regroup the resulting quantity in different valid ways. The personal data makes place-value decomposition feel less abstract.

Use it in a small group when students are learning that the same number can be represented with different combinations of tens and ones. Ask students to verify that each regrouped form still has the same total value. Create a free Find a Math Game account to generate teacher-ready lesson support for REGROUPING BIRTHDAYS. No credit card is required, with 3 lifetime lesson generations.