GRADE 1 · ALBERTAOUTCOME AB-G1-1N1
L2 · Counting backward from 20 to 0
Learning goal
“I can count backward from 20 to 0.”
Count backward — count down, one number at a time.
Back — toward the smaller numbers.
Before — the number that comes just in front.
Worked example
Count back from 10: 10, 9, 8, ___. What number comes next? Step 1: Counting back means the numbers get smaller, one at a time. Step 2: From 10, hop back: 9, then 8. Step 3: One more hop back lands on 7. Model: the 0-20 number line - the finger hops left: 10 -> 9 -> 8 -> 7.
Check yourself — explain it
When you count back, the numbers get...
Paired problem — example still visible
Count back from 15: 15, 14, 13, ___. -> 12
Faded completion — last step is yours
"Count back: 20, 19, 18, ___." -> 17
Ready to practise?
8 scored questions with a 3-rung hint ladder. Mastery needs 7/8 plus both gate questions.