Middle schoolers find the areas of parallelograms, trapezoids, and triangles. They use a geoboard on the Ti-73 to construct each shape and find its' area. Pupils record the lengths of the figures in tables on their paper.
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Definition of Translation and Three Basic Properties
Uncover the properties of translations through this exploratory instructional activity. Learners apply vectors to describe and verify transformations in the second installment of a series of 18. It provides multiple opportunities to...
8th Math CCSS: Designed
New Review The Area of Parallelograms Through Rectangle Facts
Slide a portion of a parallelogram to make a rectangle. Pupils cut parallelograms and create rectangles from the pieces. They make the connections to the areas of the figures and realize that the formula for area is the same for both...
6th Math CCSS: Designed
Solving and Graphing Absolute Value Inequalities
Turning absolute value inequalities into compound inequalities and graphing them is an algorithmic skill that many young algebrists memorize instead of working to understand. This presentation really emphasizes the how's and why's of...
13 mins 8th - 12th Math CCSS: Designed
Solve Ratio Problems Using Double Number Lines
Organization is the best way to make sure that ratios are set up correctly to be proportional. This video reviews how to solve ratio problems with addition and multiplication, shown in more detail in the prior two videos of this series,...
4 mins 5th - 8th Math CCSS: Designed