Cogito
Grade 1 Math · Chapter 2 · Lesson 3
Counting On With Pictures
Use a number and a dot card together.
10 problems · about 10 minutes · 1.OA.C.5, 1.OA.C.6
What this lesson teaches
The child counts on 1, 2, or 3 from a written numeral using a dot card as the amount to add.
- The number says where to start.
- The dots say how many hops.
- Do not count the starting number again.
Warm-Up Review
From earlier lessons. Loosen up before the new work.
5 problemsReview — Counting On: 8 + 2 = ?
Answer 10
Why 8 + 2 = 10.
Review — Putting Groups Together: What is 4 + 2?
Answer 6
Why 4 + 2 = 6.
Review — How Many Do You See?: How many dots?
Answer 4
Why A dice four is worth knowing by sight.
Review — One More, One Less: What is one more than 4?
Answer 5
Why One more than 4 is 5.
Review — Partners to Ten: How many more would make ten?
Answer 6
Why 4 and 6 are partners to ten.
Warm Up
Straightforward practice. Get the method working first.
3 problemsStart at 9. Count on 1. Where do you land?
Answer 10
Why 9 + 1 = 10.
Start at 5. Count on 3. Where do you land?
Answer 8
Why 5 + 3 = 8.
Start at 6. Count on 3. Where do you land?
Answer 9
Why Seven, eight, nine.
Build It Up
The same ideas with more to keep track of.
1 problemStart at 4. Count on 2. Where do you land?
Answer 6
Why Five, six.
Stretch Yourself
Mixed problems. Work out what kind of question it is before you start.
1 problemSticker Book: Leo has 8 stickers. He gets 2 more. How many stickers now?
Answer 10 stickers
Why 8 + 2 = 10.