Mr. Andersen shows you how to sink leaf chads in preparation for the AP Biology photosynthesis lab. An empty syringe is used to remove gas from the leaves before the lab. As the chloroplasts absorb light they produce oxygen bubbles...

In this video Paul Andersen explains how density measures the compactness of a material. You can calculate the density of a material by measuring the mass and dividing this by the volume. Water displacement is an effective way to...

The binomial distribution, introduced as setup to talk about the beta distribution

In this video Paul Andersen explains how the energy in a closed system can be converted from kinetic to potential to kinetic energy. Sample problems and a simulation is contained.

Hank reveals why our love affair with the rare earth elements has a dark side.

Stars blowing up is a surprisingly common occurrence, but who would have thought to search the bottom of the ocean if you were trying to study them?!

If you’re trying to figure out where to plan on sheltering during the zombie apocalypse, it’s essential to know whether zombies sink or float!

In 2010, South Korea experienced a particularly cold winter. People couldn't activate their smartphones while wearing gloves, so they began wielding snack sausages— causing one company to see a 40% rise in sausage sales. So, what could...

Mr. Andersen explains the Central Dogma of biology. He shows how DNA is transcribed to form mRNA and how mRNA is translated into a protein.

Nature creates some pretty amazing things, and one of the largest of these is The Grand Canyon!

Join Jessi, Bill and Webb to learn all about the place we call home!

In this video Paul Andersen explains how waves interact with objects and with other waves. When a wave hits a fixed object it will be reflected and inverted. When a wave hits a free object it will be reflected without being inverted. ...

Is Glass a Liquid?

Squeaks and Mister Brown do some experiments with soil, and learn all about why different soils feel different!



Disciplinary C

ore Ideas:

PS1.A: Structure and Properties of Matter - Matter can be described...

Paul Andersen explains how graphs are used to visually display data that is collected in experimentation. He describes five main types of graphs; line graph, scatter plot, bar graph, histogram and pie chart. He describes the important...

Mr. Andersen walks you through the cellular respiration lab.

The bottom of the cereal box is a disappointing place. But at least now you know why. Where do you see the Brazil Nut Effect around you?

Mr. Andersen explains the difference between potential and kinetic gravitational energy. He also uses physics to calculate the energy in various objects.

Paul Andersen explains how nutrients and water are transported in plants. He begins with a brief discussion of what nutrients are required by plants and where they get them. He shows you dermal, vascular and ground tissue in monocot...

Want to learn how plants move water around inside them? Or do you just want to turn a stalk of celery purple? Then try our amazing color-changing celery experiment, in class or at home!

Social class in America is... hard to talk about. As Sociology, the difficulty lies in pinning down what we mean by "Social Class." In this episode of Crash Course Sociology, Nicole chats to us about how Sociologists figure this out so...

Herein we explain that birds do not hibernate in lakes, do not migrate to the moon, but DO go on very unique journeys, which we humans have learned about in a variety of ingenious manners.

Join Jessi this week at the fort and learn about the unexpectedly awesome organism that's made up of two living things: LICHEN!

Mr. Andersen describes the major groups on the periodic table.