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Students will determine what mistake this calculator is making when simplifying fractions.
First, students will identify the mistake in a faulty calculator’s fraction simplification and write down their ideas.
Next, students will predict the simplified fractions a broken calculator produces when it subtracts the same number from the numerator and denominator instead of dividing.
Finally, students check their predictions against the calculator’s wrong answers and the correctly simplified fractions.
Students will determine what mistake this calculator is making when multiplying.
First, students will identify the mistake in a faulty calculator’s multiplication answers and write down their ideas.
Next, students will predict the results of three multiplication problems using a broken calculator that only multiplies digits.
Finally, students checked their multiplication predictions using a broken calculator that provided incorrect answers for various math problems.
Students will determine what mistake this calculator is making when adding.
First, students will identify the repeated mistakes made by a calculator when adding numbers.
Next, students will predict the incorrect results for three addition problems.
Finally, we reveal the answers.
Students determine the error in these subtraction problems.
Students analyze three incorrect subtraction problems and explain the error.
Then, using the error, they answer how the broken calculator would do it.
We reveal the answers to the final three problems.