Understand ratio concepts and use ratio reasoning to solve problems. Use ratio and rate reasoning to solve real-world and mathematical problems, e.g., by reasoning about tables of equivalent ratios, tape diagrams, double number line diagrams, or equations.

Give kids a taste of a sequence, let them build an understanding, and then see how far their predictions can take them.

Give kids a taste of a sequence, let them build an understanding, and then see how far their predictions can take them.

Give kids a taste of a sequence, let them build an understanding, and then see how far their predictions can take them.

These flowers sure are getting bigger faster! How large will they be in step 10? What about *step 50?*

A triangle splits and splits and splits again. How many will there be in step 20?