Zip and Omega need to choose a discovery to investigate for their science project. Then they're going to travel back in time to watch what really happened as the discovery was made. But will they remember the most important rule of time travel?
Omega and Zip travel back in time to research an invention. Choose an invention you are interested in. Use books or the Internet to research how this invention was discovered. Draw a diagram of the invention. Label it. Share your research with your family.