# Problem Solving Activities

## Ten Tiles II

- Problem Solving Activities
- Number and Algebra
- Level Six

Identify numbers divisible by 5;

Count large but relatively straightforward sets.

Devise and use problem solving strategies to explore situations mathematically (be systematic, think, draw a diagram).

## Nine Tiles

- Problem Solving Activities
- Number and Algebra
- Level Six

Guess and check the solution to a number problem;

Explain the effect of "carry-overs" in addition problems.

## How Many Numbers ?

- Problem Solving Activities
- Number and Algebra
- Level Six

Devise and use problem solving strategies to explore situations mathematically (be systematic, make a list).

## All The Ones

- Problem Solving Activities
- Number and Algebra
- Level Six

Use a calculator efficiently

Devise a strategy to solve a number problem involving remainders.

Devise and use problem solving strategies to explore situations mathematically (be systematic)

## Adding Ten Tiles II

- Problem Solving Activities
- Number and Algebra
- Level Six

Use the numbers facts with digits to solve a problem

Devise and use problem solving strategies to explore situations mathematically (guess and check, be systematic, look for patterns, think, use algebra).

## Working Backwards

- Problem Solving Activities
- Number and Algebra
- Level Five

Use their mathematical knowledge to invent problems

Devise and use problem solving strategies to explore situations mathematically.

## My Son is Naughty

- Problem Solving Activities
- Number and Algebra
- Level Five

Find factors of numbers

Work systematically

Use logic to explain away certain possible number combinations.

## The Magic Squares

- Problem Solving Activities
- Number and Algebra
- Level Five

Use algebra as required

Construct magic squares

## Doubling Up

- Problem Solving Activities
- Number and Algebra
- Level Five

Perform calculations with powers of numbers and square roots

Explain the relation between a square root and a square.

Devise and use problem solving strategies to explore situations mathematically. This problem uses be systematic, draw a picture, and think.

## Spheres

- Problem Solving Activities
- Number and Algebra
- Level Five

use powers and take square and cube roots (with or without a calculator)

devise and use problem solving strategies to explore situations mathematically (be systematic, draw a diagram, use smaller cases).