Marble runs.

                                                         Marble Runs 
For the last two weeks, we have been making marble runs and machines. We are trying to include simple machines as in; pulleys, levers, ramps, screws,   and many more. Most of us have almost finished and are collecting data now.  We will use this for the science fair. We can work with a younger buddy from Room three or on all own. We can have much as stuff as we want. We will be presenting these at science fair at the end of term. By Hannah  & Willow