Grade 4 - Progress in Mathematics

Find a pattern to solve each problem. Yo u may use grid paper.

1. Jessie adds one more square to this drawing.
   It now has 2 lines of symmetry. Where does
   she add the square? (Hint:See page 22.)

Original Drawing

Jessie draws this shape.

She adds one square. The finished

shape has 2 lines of symmetry.

Visualize the facts of the

problem as you reread it.

Facts:

Question: Where does she add the last square?

Find the line of symmetry in the original drawing.

Then think of other ways to fold the shape in half.

2. Jacques paints these shapes in order on a belt:
   triangle, square, triangle, pentagon, triangle,
   hexagon. What are the ninth and tenth shapes?


3. Can you cut this shape into 2 congruent
   hexagons? 2 congruent octagons?
   (Hint:See page 21.)


4. Tr o y makes a gerbil cage. The floor of the
   cage must have an area of 4 square units.
   How many different shapes can the floor be?


5. A brick border follows this pattern.
   How many bricks are used in a 10-ft border?

6. Write a problem that uses a pattern.
   Have a classmate solve it.

2 ft

8204-6_348-349 12/16/05 10:51 AM Page 349