Here is the Study Guide and Answer Key for Module 7 material. Please note that while there might be some differences between the references to lessons and Khan in the SG Key, the answers are indeed for the questions you received. Let me know if you have any questions.
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Our final lesson of Grade 8 math looked at applications of the Pythagorean Theorem--some involving geometry, other involving cutting corners.
Another application of the Pythagorean Theorem is the distance formula used to determine the length of lines on a coordinate plane. In this lesson, we practiced finding diagonal lengths on a coordinate plane.
We used our understanding of the Pythagorean Theorem in this lesson to prove that triangles either were or were not right triangles.
This lesson used similar triangles to prove the pythagorean theorem. It was a fairly in depth lesson and will require some careful studying to get complete comprehension.
This lesson was math by brute force. We used estimation and multiplication to narrow our approximation of irrational numbers to the nearest hundredth.
In this lesson we converted repeating decimals to fractions by setting up equations and simplifying. It was a sophisticated lesson, and I think students were challenged by it.
This video lesson introduced students to the formal concept and definition of rational and irrational numbers.
We began to use what we know about square roots and radicals to solve basic equations involving square roots, squares, and cubes.
On this day, we learned how to simplify square roots by extracting perfect square factors from a square root.
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May 2016
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