Cogito
Pre-K Math · Chapter 6 · Lesson 1
Big and Small
Comparing two things.
10 problems · about 6 minutes · PK.MD.1
What this lesson teaches
The child compares two objects by size.
- Put two things side by side to compare.
- Line up the bottoms to be fair.
Warm-Up Review
From earlier lessons. Loosen up before the new work.
5 problemsReview — Making Your Own Pattern: ⭐⭐🌙⭐⭐🌙. What is next?
Answer Star.
Why Star.
Review — What Comes Next: 🔵🔴🔵🔴. What is next?
Answer Blue.
Why Blue.
Review — Which Group Has More: Which is more, 8 or 5?
Answer 8
Why Eight.
Review — Sorting by Shape and Size: Five small cars and one big. How many small?
Answer 5
Why Five.
Review — Sorting by Colour: 🔵🔵🔵🔴. How many blue?
Answer 3
Why Three.
Warm Up
Straightforward practice. Get the method working first.
2 problemsWhich is taller, 8 blocks or 5?
Answer 8
Why Eight.
Which is taller, 7 blocks or 4?
Answer 7
Why More blocks.
Build It Up
The same ideas with more to keep track of.
1 problemWhich is shorter, 2 blocks or 5?
Answer 2
Why Fewer blocks.
Stretch Yourself
Mixed problems. Work out what kind of question it is before you start.
2 problemsShould you line up the bottoms when comparing?
Answer Yes.
Why To be fair.
Two Towers: A tower of 6 blocks and one of 3. Which is taller?
Answer 6
Why The one with six.