Cogito
Grade 1 Math · Chapter 9 · Lesson 4
Making New Shapes
Put small shapes together to build a bigger one.
10 problems · about 13 minutes · 1.G.A.2
Figure — use these to answer the problems
Warm-Up Review
From earlier lessons. Loosen up before the new work.
4 problemsFrom “Naming Solid Shapes”
A can of soup is shaped like what?
- A cylinder.
- A cube.
From “Naming Flat Shapes”
A shape has 6 straight sides. What is it?
- A hexagon.
- A square.
From “What Makes a Shape a Shape?”
How many corners does a triangle have?
AnswerFrom “When the Ones Make a Ten”
16 + 17 = ?
Answer
Warm Up
Straightforward practice. Get the method working first.
3 problemsHow many triangles fill one hexagon?
AnswerCan pieces leave gaps?
- No. They must fill it exactly.
- Yes. Gaps are fine.
How many triangles fill a hexagon?
Answer
Build It Up
The same ideas with more to keep track of.
1 problemHow many rhombuses fill a hexagon?
Answer
Stretch Yourself
Mixed problems. Work out what kind of question it is before you start.
2 problemsHow many squares fill this rectangle?
AnswerPattern Blocks
How many trapezoids fill one hexagon?
Answertrapezoids