How Does Cell Size And Shape Affect Transport of Materials

Use salmon eggs as a cell model for demonstrating the movement of water over concentration gradients. Junior scientists examine the same process microscopically with an onion cell. They use a thistle tube and a semipermeable membrane to...

Can your class solve the Mystery of the Crooked Cell? Junior geneticists collaborate to learn about sickle cell anemia in a fascinating lesson plan. The included materials help them to examine the genetic factors behind the disease...

Help young biologists develop an understanding of eukaryotic cells with this simple exercise. Provided with a list of organelles found in plant an animal cells, students must correctly identify the function of each and record any...

Cancer's ability to quickly spread from one organ to the next makes it one of the most fatal diseases in recent history. Watch as this short video takes you on a trip into the microscopic world of cancer cells, exploring the different...

Hidden in our neck is an important, but often overlooked, little organ called the thyroid. Enjoy this short video as it explains the vital role this powerful organ plays in controlling the function of all the cells in our body, as well...

Explaining exactly how DNA works to provide genetic information is a complex topic, but it is presented in a clear and engaging way through a five-minute video. Have learners try to explain how DNA works before watching the video, then...

Feeling hungry after skipping breakfast? Here's why! Introduce young scientists to that feeling of fullness with an engaging video. Use the included assessment and extension materials to further study which foods make us feel the...

The human immune system doesn't always prevent us from getting sick, so what is it doing? Young scientists watch a short video explaining what the immune system is and how it works. Then, they answer eight questions to prepare for an...

What triggers asthma? What are the symptoms of an asthma attack? Watch a video that explains how asthma affects the respiratory system and the extra work the lungs have to do when a person is undergoing an asthma attack.

Does cell size have something to do with magic? No, but their size has everything to do with geometry. The video explores an analysis of two cylinder's volumes, showing how surface area affects volume. Learners see how in biology,...