Label four pieces of paper a, b, c, and d and four envelopes A, B, C, and D. Turn all the items over and mix them up. Then, without reading the labels, place a piece of paper into each envelope.

Did you place all four in the right envelopes? Predict how many times you would place all four correctly if you repeated the experiment 29 more times. Then test your prediction by doing the experiment again.

Draw a large circle on a sheet of paper and divide it into four equal-sized sections (quarter circles). Label each section. Bend a small paper clip into a pointer. Place the pointer at the circle’s center. Spin the pointer on the circle. In which section did it stop?

Spin the pointer a total of 50 times and record the results. If you displayed your results in a circle graph, what would it look like?