- Create a number trick that always ends with number of siblings you have or anyone else has. Use at least three different operations and at least four steps.
- Test your number trick at least 3 times to show that it works.
- Use deductive reasoning to develop a proof of your conjecture.
- Is there a number that will not work in your number trick? Explain.
Here is an example:
|Statement||Test 2 siblings||0 siblings||Deductive Reasoning|
|The number of siblings that you have||2||0||x|
|Multiply by 4||40||32||4x+32|
|Divide by 2||14||10||2x+10|
|Divide by 2||2||0||x|