Chemapalooza 6-22: Ooey Gooey
Silly slime and smiling faces! Students became Chemical Polymer Interns for Ooey Gooey Toy Company today. While creating their own Play Doh, Putty, Goo, and Oobleck substances, our interns learned about polymers and heterogeneous mixtures. They used that knowledge to make a new toy for the company, a bouncy ball, by using the ingredients from the previous slimes.
Ask your student: What type of substance is Play Doh? (Suspension) What kind of molecules are in Putty and Goo? (Polymers) What substance gives Goo its sliminess? (Borax)
Chemapalooza 6/21: Water Beads
Today, in Chemapalooza, the students investigated the nature of water beads. Our little chemists used the scientific method to design their own experiment and create a hypothesis on how they predict different liquids or different concentrations of liquids would have an impact on the growth-size of water beads. As the week progresses, the students will continue to work through the experiment and analyze their results and ultimately evaluate their hypothesis.
Ask your student:
What is osmosis? (Osmosis is a special type of diffusion- movement of water across a barrier form high to low concentration)
What is an independent variable? (An independent variable is the variable you are testing in an experiment: it is the variable that is changed)
Game Day STEM 6/22: Egghead Day 1
Today, in Game Day STEM, the students used a “Free Fall Impact Tester” to test how well specific materials protect a hard-boiled egg from a free falling object. The goal of the activity was to simulate how well different materials used in helmets protect the head from impact all while learning about free fall distance and velocity.
Ask your student: What is the relationship between the height of a dropped object and the velocity with which the object is traveling? (The higher the height the object is dropped from, the greater the velocity. There is a direct relationship between height and velocity)
Game Day STEM 6/21: Pole Vaulting!
Today, students continued to explore the important role that physics plays in sports. They also investigated how potential and kinetic energy plays a role in pole vaulting. After collecting data, students hypothesized the optimal conditions for a vault, and using an online simulation, they were able to test some of these hypotheses by changing various factors that affect pole vaulting (speed of vaulter, height of bar, etc.).
Ask your student: Is there an optimal amount of flexibility in the pole that would be best for the vaulter? Which factor had the biggest effect on whether or not the vaulter cleared the bar?