Cogito
Kindergarten Math · Chapter 7 · Lesson 1
Counting by Ones to a Hundred
The pattern that keeps repeating.
10 problems · about 9 minutes · K.CC.A.1, K.CC.A.2
What this lesson teaches
The child counts to 100 by ones and notices the repeating pattern.
- The ones repeat in every row.
- After a nine, a new ten starts.
- You can start counting anywhere.
Warm-Up Review
From earlier lessons. Loosen up before the new work.
4 problemsReview — Comparing Teen Numbers: Which is bigger, 14 or 18?
Answer 18
Why Eighteen.
Review — Building Teen Numbers: 10 + 5 = ?
Answer 15
Why Fifteen.
Review — Ten and Some More: 18 is 10 and how many?
Answer 8
Why Eight.
Review — Sums That Make Ten: 3 + ? = 10
Answer 7
Why Seven.
Warm Up
Straightforward practice. Get the method working first.
3 problemsWhat comes after 49?
Answer 50
Why Fifty.
What comes after 39?
Answer 40
Why A new ten.
What comes after 55?
Answer 56
Why Just one more.
Build It Up
The same ideas with more to keep track of.
2 problemsWhat comes after 99?
Answer 100
Why One hundred.
What comes after 70?
Answer 71
Why Seventy-one.
Stretch Yourself
Mixed problems. Work out what kind of question it is before you start.
1 problemThe Next Number: What comes after 29?
Answer 30
Why Thirty.