Students estimate how much change they would receive if they paid for a $31.27 radio with a $50 bill. They explain their thinking. They practice determining correct change when making purchases.
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Graphs of Linear Functions and Rate of Change
Discover an important property of linear functions. Learners use the slope formula to calculate the rates of change of linear functions. They find that linear functions have constant rates of change and use this property to determine if...
8th Math CCSS: Designed
New Review Change of Base: River Logs
Using the answers to the challenge questions, class members work through simplifying a complex logarithmic expression that requires changing bases. Pupils drag values to fill in the steps to arrive at a numerical equivalent expression.
11th - Higher Ed Math CCSS: Designed
Performance Task: Who is Correct?
Two methods are used to solve the same equation and your learners are to determine which method was done incorrectly. The performance task contains a writing assignment where they need to explain the incorrect part of the problem and how...
7th - 9th Math CCSS: Designed
Changes in Period and Amplitude of the Sine Function
How does a change in amplitude or period affect the equation of a sine function? Scholars move sliders to change the frequency and period of the sine function. The interactive displays the resulting equation, and pupils determine the...
10th - 12th Math CCSS: Designed
Average and Instantaneous Rates of Change
How can you determine the rate of change on a curve? Pupils use the interactive to discover what happens with the average rate of change as the point move closer to the other. Using the definition of the derivative, learners find that it...
11th - Higher Ed Math
How Do You Figure Out Whether a Percent of Change is an Increase or a Decrease?
Another word problem to figure out. Well, first off you are trying to figure out the percent of something and this means your formula will be a proportional equivalent. Once you have the known terms in the correct places you can figure...
7 seconds 6th - 8th Math