Captain Hop's River Ride

Captain Hop's River Ride is an activity in JumpStart Math for First Graders designed to teach addition at a first grade level.

Premise
The fleas, no longer able to move around the backyard by riding on Frankie since he was shrunk by the Queen Bee, have devised a new method of transportation - under the guidance of Captain Hop, they travel on a "river" made by a garden hose using a leaf as their boat.

Description
In order to sail on the hose-river, the number of fleas on one side must equal the amount of "cargo" on the other. Two groups of fleas will hop onto the leaf boat, and their numbers are recorded in an addition problem on a banner. A purple caterpillar using its back as a conveyor belt will bring various pearls with numbers on them to Frankie, and the player must select the one containing the correct answer to the math problem on the banner and place it on the boat. Once this is done, there is a brief segment in which the player must guide Frankie down the "river", and at one point answer a review math problem by selecting which path to go down. A bone is won after four "boats" are successfully loaded and guided.

On later levels, entire crates of 10 fleas each may be added to the leaf boat.

Digital manual description
These flighty fleas are mighty tiny, but they've discovered a great way to get around Frankie's yard. They sail on leaves along a trickle of water, traveling from one flea brush to the next. First, you have to help Captain Hop load the correct amount of cargo onto the leaf, so that it's balanced and won't sink. SKILLS:  Adding
 * Look at the addition problem on the banner. Then place the correct amount of cargo onto the leaf by choosing the correct pearls.
 * After a leaf is loaded, help guide the leaf safely down the stream to the next loading station.
 * Use your mouse to guide the leaves past the rocks in the water. Careful! Don't crash!
 * When the leaf reaches the bridge with the two tunnels in it, it's up to you to choose the right path. Both tunnels have math problems on them. The number on your cargo is the correct answer to one of the problems. Choose the correct problem by clicking on that tunnel.
 * When you load and guide four leaves safely to the end, you will earn one bone!