Sheri, 5th grader, uses 2 transformation matrices on the dog

The first matrix in red Sheri made up, in red, didn't change the dog and was the matrix that acted as 1 in multiplication. The 2nd matrix, in blue, reflected the dog in the line x=y, producing the inverse!

See Don's book "Changing Shapes With Matrices" and sample problems from this book.

Back to Sheri's first page
Sheri writes 64 using exponents
Sheri solves the quadratic equation x² - x - 1 = 0
Sheri finds the base for Don's age of   114_? = 71₁₀
Sheri uses the quadratic formula to find base for Don's age of   114_? = 71₁₀
Sheri finds the measure of an inscribed angle
Sheri uses binary numerals to make the Magic Number Game cards
Sheri decreases the size of a shell using the pantograph
Sheri moves a parabola and finds the equation
Sheri finds the ratio of The Volume of a Pyramid / The Volume of a Cube (3 ways)
Sheri works with the sand pendulum
Sheri figures out a rule for The Tower Puzzle
Sheri starts Trig

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