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Number games that develop recognition and understanding of functions and inverse functions and the ability to create formulas.
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This lesson is about
different representations of algebraic relationships, namely equations, graphs, tables and words. This activity should be given to the class as a formative assessment activity: it is designed to provide the teacher with information about the learners’ current levels of understanding.
After a short introduction, during which the teacher models […]
Amy and her friends have built some functions and they are challenging each other to find the input when they know an output.
They think the inputs to their functions giving the output 10 are 5 for Amy’s function, 4 for Busi’s, for Chris’s and for Dudu’s. Do you agree? Why or […]
Amy and her friends have built some functions. If they all input the number 1 into their functions Amy’s output would be 6, Busi’s 1, Chris’s 6½ and Dudu’s 3½.
Build some of your own functions using the operations [subtract 2], [multiply by 3], [divide by 2] and [add […]
The graph shows how the weight of a letter (including the envelope) varies with the number of sheets of paper used.
What is the weight of a single sheet of paper?
What is the weight of the envelope?
If w is the weight of the letter (including the envelope) and s is […]
Do this as you read…
Think of a number.
Multiply it by 3.
Add 6.
Take away your number.
Divide by 2.
Take away your number.
You have finished with 3.
How does this work?
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