Click the "New" button. It will ask for two numbers. Those are the two numbers for which you are supposed to program the frog to add for you. When you click the green flag, the frog will demonstrate how that addition occurs on the number line.
Students are given a project that has the new button implemented. When the user types in two numbers, it draws the number line from 0 to the closest multiple of 5 that is greater than the sum of the two numbers. The student is expected to make a program that starts on green flag, has one instruction "Start at X" where X is the start number, then has a set of "Add 1" instructions. The Start at X and Add 1 blocks are custom blocks we have already implemented. So students create the script that starts at 1 number and adds a certain number of times. Then they can play the program to see what happens.
