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What’s My Rule?

What’s My Rule?. JoeyLynn Paquette. What’s My Rule?. Variability and Change. What you can do after seeing this presentation:. Identify and describe predictable changes and patterns Make your own predictions. Predictable Changes. Predictable changes are changes that we expect to happen.

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What’s My Rule?

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  1. What’s My Rule? JoeyLynn Paquette

  2. What’s My Rule? Variability and Change

  3. What you can do after seeing this presentation: • Identify and describe predictable changes and patterns • Make your own predictions

  4. Predictable Changes • Predictable changes are changes that we expect to happen. • The seasons of the year: winter changes to spring, spring changes to summer, and summer changes to winter. • Babies grow into toddlers, toddlers into children, children into teenagers, teenagers into adults. • As you get older, you grow taller and heavier.

  5. Patterns • Patterns make predictable changes. • Example: A plant grows 2 inches taller every week. It started growing when it was one inch tall. How tall do you predict it will be on the seventh week? Get more practice with patterns. Don’t forget to check your answers! Then, play a pattern game online!

  6. Making Pattern Rules • Did you predict the plant would be 13 inches tall the seventh week? • In a way, the plant made a rule; it must grow 2 inches every week. Since it was 11 inches tall on the sixth week, the plant will be 11+2 inches on the seventh week. • We can make up different rules. For example, we can make the rule the plant grows 3 inches each week.

  7. Number Machines • Number machines have rules. • A number machine works like this: a number called the input is put into the machine, and another number, called the output comes out. The machine computes the output using the input and the rule.

  8. Inputs and Outputs • The output is different for each value of the input. • For each input, there is only one output.

  9. What’s my rule? • An important part of understanding patterns is being able to determine the rule given the inputs and outputs. What’s my rule? Hint: If I put in 0, the output is 0. If I put in 1, the output is 3. If I put in 2, the output is 6 ….What is my rule? Check your answer, and get more practice with guessing the rule.

  10. Let’s Be Mathematicians • Older students and mathematicians have special names for what we have been calling the input and output. They call them variables. • The rule has a special name, too. It is called a function. • And, remember a pattern is a repeated design or reoccurring sequence. • If you need more help with these terms or if you would like to see more examples using these terms, check out A Maths Dictionary for Kids.

  11. Resources • A Maths Dictionary for Kids • What’s My Rule? • MI CLiMB • Principles and Standards for School Mathematics • Intermath

  12. What’s My Rule? This PowerPoint presentation was created by J. Paquette.

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