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Transformations | Open Middle®
Directions: Given triangle ABC with vertices (-8,2), (-2,2), and (-2, 8), create triangle DEF in quadrant one that uses a translation, rotation, and reflection (in any order) to take that triangle to ...
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Functions | Open Middle®
Directions: List 2 points form a line that satisfies the following (you can use numbers 0-5, but you can only use a number once). Write the equation of the line represented by the points: a) Its rate ...
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What’s Open Middle? | Open Middle®
The name "Open Middle" might sound like a strange name for a website about math problems. However, it references a very specific type of problem we try to encourage here. Most of the problems on this ...
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Mean, Median, and Range | Open Middle®
Directions: Create a set of five positive integers from 1 to 20 that have the same mean, median, and range. Source: Eric Berchtold and Melissa Minnix
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Exploring Equations | Open Middle®
Directions: For each problem below, use the digits 1 to 9 at most one time each, to fill in the boxes to find the the greatest value for x that you can. Source: Chase Orton and Mark Goldstein
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Order of Operations | Open Middle®
Directions: Use the Order of Operations with the numbers shown on the card below (in any order) so that when you simplify the expression, the answer is 24. Source: This problem was adapted from the 24...