Directions
- For each unit in your student book, there are two online Brain Teasers. If you get stuck, click on the Hints button for a strategy to help solve the question. Once you find the answer to the question, click on the Solution button to see if you are right.
- The hints often suggest problem-solving strategies. Here are some of the strategies you might try:
- Write a Number Sentence
- Write an Equation
- Draw a Picture
- Make a Table
- Act It Out
- Guess and Check
- Find a Pattern
- Work Backward
- Make a List
- Solve a Simpler Problem
- Choose a Strategy
- Use Logical Thinking
- In solving the Brain Teasers, try this four-step procedure: Understand, Plan, Solve, and Look Back.
Understand
- What is the question?
- What facts do you know?
Plan
- Have you ever solved a problem like this before?
- If you missed something, try the problem again.
Solve
- Try your plan.
Look Back
- Do the answers match the facts in the problem?
- If you missed something, try the problem again.