Hopsalot's Popsalot!

Hopsalot's Popsalot! is an activity in JumpStart Advanced Kindergarten: Fundamentals. It is designed to teach addition and subtraction skills at a kindergarten level.

Description
Hopsalot needs to fuel up his robot Motormouth. Motormouth must be given a precise number of fizzy pop bottles, or else it will overheat.

The activity has two modes: addition and subtraction. In either mode, the player starts out with two trays that are different colors. A number will appear on the first tray, and the player must place the same number of bottles into that tray. The color of the bottles must match the color of the tray that they are placed into.

In addition mode, the player must also fill the second tray with bottles, then add the numbers on both trays, and click on the number below that shows how many bottles there are altogether. In subtraction mode, after the player fills the first tray, they must remove a certain number of bottles and give them to Hopsalot. Hopsalot will drink the pop, and then the empty bottles go to the second tray. Then the player must count the number of full bottles remaining and click on the matching number below.

Digital manual description
 Game Play Instructions 

Hops-A-Lot needs help counting soda pop bottles for the race engines. Pick bottles from the fizzy-pop tree and count them onto trays to match each equation. Correct answers make the motor mouth engine hummm and purrr, while incorrect answers make it sputter and cough. Math is a gas with Pops-A-Lot Soda Pop! Educational Skills
 * A ddition with no carryover
 * Subtraction with no Carryover
 * Counting and quantities
 * Showing sets & organizing numbers
 * Representing equations
 * Reinforcing math symbols
 * Number sense