Monday, May 10th
Today in science: After making last-minute adjustments to their land yachts, student teams were asked to perform their final (‘official’) five trials, which Dr. Merritt recorded in our class results spreadsheet. Each team was also asked to record their own team’s results in a data table prepared in their Lab Notebook.
Tuesday, May 11th
Today in science: After the remaining student teams performed their final (‘official’) five trials (which were then added to the class results spreadsheet), each team was then challenged to find a way of making their land yachts ‘sail’ their way back to the starting line using only the force of the oncoming (head)wind. Only the variables previously established in class could be altered (in other words, students could not add new structure to–or subtract from–their land yacht).
Thursday, May 13th
Today in science: To summarize our Land Yacht investigation, students were asked to draw a new force diagram in their Lab Notebooks that included the following forces (and arrows): gravity (Fg), wind/air (Fw), wind/air resistance (Fr), normal force (Fn), friction (Ff). When finished, students were briefly introduced to the vehicle which is the central focus of their next Forces & Motion module, the LEGO Propeller Car. The new Propeller Car teams began building their cars from the LEGO instructions staring on page 104 of their building instructions book.
Friday, May 14th
Today in science: After double-checking the construction of their assigned Propeller Car, students were asked to perform a series of trials on the classroom track with their cars in the 2-blade, 4-blade, and 6-blade configuration. Furthermore, they were responsible for testing their configured cars in both the downwind and upwind directions. During these trials, students were responsible for recording time (in seconds) and distance (in meters) in data tables glued into their Lab Notebooks. This data was then used to calculate the speed of their car (in meters/second).