lesson
Odd Numbers with a Leftover One
Show that an odd number has one leftover when split into pairs.

Show that an odd number has one leftover when split into pairs.
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8 lessons
Develop understanding of even and odd numbers through pairing models, explore addition and skip-counting patterns, and apply equal-groups reasoning to word problems.
analyze mathematical relationships to connect and communicate mathematical ideas; and
display, explain, and justify mathematical ideas and arguments using precise mathematical language in written or oral communication.