Today our experiment centered around the students using the chariots to determine how much weight their minions could haul when building a lego structure on top of the snap in brick feature of the chariot base. Gram blocks were used and they were only counted if they stayed on the chariot after a collision. The Sphero also had to be able to physically change its location, not just spin in place. Some of the interesting discussions that came up centered around the size of the bricks used (single vs. double row blocks), how lego doors and windows add height but weigh less, that by snapping the gram blocks together you could have them higher but outwit the collision rule. Some students thought that snapping the gram blocks together was cheating so this also added to the discussion about the parameters of the experiment. Some of the groups built their "containers" very tall while others found that the taller they were the more they sacrificed in being able to move the Sphero. Also, the taller the structure, the more likely it would tip over.
The STEM Sisters are Elementary Teachers working together on STEM related topics and projects.