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)
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)
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)
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?
Science@IMSA Wednesday, 6-21, Cardiovascular Physiology and Classic Frog Dissection
Today students explored cardiac and lung output in response to physical activity. They established their baseline heart rate, lung capacity, and blood pressure, then measured the same after 2 sets of 30 minutes of sustained activity. Tomorrow they will analyze their collected data. In the other section, students reviewed the vertebrate nervous system before performing a full frog dissection with a standard ventral opening with identification and removal of all organs and nerve cord and brain removal!
Science@IMSA – Tuesday 6/20 – Human Neurophysiology and Crayfish Dissection
Today students performed a dissection of a live (anesthetized) crayfish, highlighting all of its significant sensory structures. They also did a histology of its nervous tissue to examine the neural network. In the other section of the course students examined reaction and reflex variation to auditory and visual reflexes (using eye charts and tuning forks) as well as tactile reflexes.
Today students tested to see how the position of your body affects the way it moves. After selecting a few different angles, the students precisely measured the flexion of their knee, and then measured how high they could jump!
Ask your student: What angle helped you to jump the highest?
Chemapalooza – 6/20: Magic Messages and Liquid Nitrogen Ice Cream!
Today, students became chemical investigators to discover the concepts of pH and acids/bases.Our junior chemical scientists observed color changes during reactions using common household materials. Students also wrote invisible messages to friends!
Ask your student: What are examples of acidic liquids? What are examples of basic liquids? (Acidic: tomato juice, acid rain, battery fluid; Basic: milk, eggs, soapy water)
Did you know that a sea star smells with its whole body? Students in Science@IMSA do now! On Monday they performed a sea star dissection in their quest to understand how organisms have adapted and evolved different responses to survive. In the other section, they became familiar with respiratory physiology and formed a question, hypothesis, and experiment/test related to how activity affects respiratory function.
To start off the week, in one of their lessons the students investigated splash. They experimented with different variables in order to hypothesize what is necessary for divers to enter the water with minimal splash. Students generated an investigable question, developed a procedure to test their question, and analyzed the results of their experiment.
While testing their hypothesis students dropped many different weighted objects at different heights into the water to see what was different in the splash.
A question to ask your student: What was your investigable question(s)? (various answers)