This can be frustrating to a first-timer without a lot of patience, but all the answers you need can be found inside the game if you know where to look. Unlike the glorified multiple choice gameplay of JumpStart 6th Grade, many of the puzzles in JumpStart 5th Grade require reading for information and open-ended number manipulation, so you may have to slow down and plan ahead.
If you're not in a hurry, you can provoke the non-productive options in the dialogue trees for the jokes. It's short enough that it can be finished in an afternoon if you know what you're doing. Jo Hammett single-handedly stops an evil scientist who plans to destroy the city one building at a time. Other JumpStart titles gave the player control of the direction or at least randomized the order. Here is the video game JumpStart Adventures: 3rd Grade - Mystery Mountain Released in 1996 on Windows, it's still available and playable with some tinkering. The player has to visit each location and play each game in order because of story progression. The free preschool games can be played by kids as young as 3 Older kids can raise mythical creatures, fly on broomsticks.
On, you can find free online games for kids of all ages. This game is a lot more story-heavy than the other JumpStart titles. For double the fun, JumpStart lets players challenge friends to top their high scores in their favorite online games.