Maria had a bag of marbles that contained 4 blue marbles, 3 red marbles, 2 yellow marbles, and 1 green marble. She picked a red marble out of the bag, put it back and then picked a blue marble. After 20 picks, she had chosen a red marble 8 times. She concluded P(red) 0.4. Is she correct? Explain.
Flexible Unit Projects & Labs
Projects are flexible unit-level learning investigations chosen by the teacher. They belong to Module 2 as a whole rather than specific days. Teachers can assign or students can explore any of the following projects during this unit:
