In this app, students manipulate gears, chains, rods, and pulleys to work themselves through each level. Each level teaches them how different mechanisms affect one another. Students are creators when they use Crazy Gears.

(Grades K-3; $2.99)

Tinkercad is a free online 3D modeling program. It is easy to use and teaches students how to make and create 3D models. If a 3D printer is available, students can print their designs. If not, students can order their 3D model, for varying prices. Students are creators when they use Tinkercad.

(Grades 3-6; Free to create, Costs money to order models)

Simple Physics is an app that lets you design complex structures from tree houses to ferris wheels. You can test your design to see if the strain is distributed properly and your design is successful. After you can improve your design. Students are creators when they use Simple Physics.

(Grades 3-6; $0.99)

Students experiment with different simple machines such as levers, pulleys, inclined planes, wedges, wheel and axles, and screws. They discover how these simple machines work by changing these simple machines in order to complete different tasks and test their changes. Students are creators when they use Simple Machines.

(Grades K-6; $2.99)

The Robot Factory allows students to use over 100 different parts to create robots. Students test their robots to see if they will run, walk, fly, or hop. Students are creators when they use the Robot Factory.

(Grades K-6; $2.99)

Minecraft can be played via a web browser or an app. It allows students to build and create. Students can create anything from simple homes to complex castles. Students are creators when they use this app.

(Grades 3-6; $6.99)

Photo from Kevin O'Shea.