Cogito
Pre-K Math · Chapter 4 · Lesson 1
Sorting by Colour
Putting the same ones together.
10 problems · about 6 minutes · PK.MD.2
What this lesson teaches
The child sorts objects into groups by colour.
- Sorting puts the same ones together.
- You can sort by colour.
Warm-Up Review
From earlier lessons. Loosen up before the new work.
5 problemsReview — Shape Hunt: A plate is what shape?
Answer A circle.
Why A circle.
Review — Rectangles: How many sides does a rectangle have?
Answer 4
Why Four.
Review — Triangles: How many corners does a triangle have?
Answer 3
Why Three.
Review — Circles and Squares: How many corners does a square have?
Answer 4
Why Four.
Review — Counting a Jumble: How many? ●●●●●●●●
Answer 8
Why Eight.
Warm Up
Straightforward practice. Get the method working first.
2 problems🔵🔵🔵🔴. How many blue?
Answer 3
Why Three.
🔴🔴🔵. How many red?
Answer 2
Why Just the red.
Build It Up
The same ideas with more to keep track of.
1 problem🔴🔵🔵🔵. How many blue?
Answer 3
Why Just the blue.
Stretch Yourself
Mixed problems. Work out what kind of question it is before you start.
2 problems🔴🔴🔵. How many altogether?
Answer 3
Why Count them all.
The Socks: Three red socks and two blue. How many red?
Answer 3
Why Three red.