GRADE 2 · ALBERTAOUTCOME AB-G2-2N1
L1 · Even or odd? Sharing into two equal groups
Learning goal
“I can tell if a number is even or odd by sharing counters into two equal groups.”
Even — a number that shares into two equal groups with none left over.
Odd — a number that shares into two equal groups with 1 left over.
Equal groups — groups that have exactly the same number in each group.
Worked example
Mia and Sam share 12 counters, one at a time, back and forth. Step 1: Keep dealing until every counter is on a mat: 1 for Mia, 1 for Sam, and so on. Step 2: Count each mat: Mia has 6 and Sam has 6. The groups are equal. Step 3: No counter is left over. 12 is even.
Check yourself — explain it
12 is even. Why?
Paired problem — example still visible
Two friends share 10 counters equally. -> 5 each, none left over. 10 is even.
Faded completion — last step is yours
"8 counters shared by two friends: each friend gets 4. Left over: ___. So 8 is ___." -> 0; even
Ready to practise?
10 scored questions with a 3-rung hint ladder. Mastery needs 8/10 plus both gate questions.