New ReviewCell size is limited by the surface area to volume ratio, but why is this true? Scholars measure the surface area and volume of cubes before placing them into liquid. After a set amount of time, they measure the uptake by diffusion for...

New ReviewCells are busy places! How do things move around in such a tiny environment? Introduce young life scientists to the types of cellular transport through a video that is part of a large biology playlist. Animated characters demonstrate how...

Connect the chemical aspects of coffee to the world in which we live! Scholars consider the molecules within coffee and how they interact with the environment as they view an episode of the ACS Reaction series. From caffeine as a...

Jupiter could make one mean smoothie! Discover how the massive planet helped shape the rest of our solar system through a Why with Nye! video from THNKR. The resource discusses Jupiter as the first planet in the solar system to form, how...

Diffusion is an integral part of cell health. A thorough lesson explores cell diffusion and the characteristics that affect the rate of diffusion. Questions guide learners to making important conclusions as they manipulate the...

Does molecular mass affect the rate of diffusion? The simulation allows scholars to experiment with diffusion while varying the molecular mass and temperature. The timer automatically stops when a certain point is reached, making it easy...

Diffusion rates change with differences in temperature. See it happen through a simulation that allows scholars to explore the rates of diffusion at five different temperatures. It also allows young scientists to trace the movement of a...

Mitochondria use two semipermeable membranes to work properly. Young scientists adjust the pore size for two membranes. They then observe the diffusion of two different sizes of molecules.

Trying to learn through diffusion rather than simply studying the material rarely works for scholars. This simulation helps make learning diffusion fun. Pupils add a drop of dye to water and observe the diffusion as the molecules bounce...

Do cells breathe? An installment in the Fuse School series of videos describes how cells take in the nutrients they need and release the waste they don't need. It highlights the process of diffusion and osmosis.

Why do balloons go flat over time? The answer lies in the behavior of gases! Introduce young scientists to diffusion and effusion with a video. Pupils learn the composition and partial pressures of atmospheric gases as well as how the...

Some molecules move through a membrane with diffusion while others require protein channels. The video and interactive discuss both types of passive transport. Challenge questions allow scholars to demonstrate their understanding.

Phew, what's that smell? And, how does something like a scent travel from its source to all corners of a room? Science sleuths learn how diffusion is responsible for spreading odors around in the sixth installment in a 14-part video...

Examine the science behind rates of diffusion. The video lesson and following interactive activity focus on the molecular components of different smells. Learners monitor the diffusion of each smell as they 'race' through a room.

Create a model to study a microscopic phenomenon. The seventh of 12 lessons uses an egg (without its shell) to represent a cell membrane. Using different solutions, learners explore the concept of cell diffusion. They monitor...

How many dimensions are there? Latitude, longitude, and altitude are accepted dimensions, but what about time or another type of dimension? An engaging video describes how we theorize that we live in three dimensions and which laws of...

Sixth in a series of 36, this lesson focuses on gases and their behavior in given situations. Learners review the states of matter and then focus on gases, specifically learning Boyle's, Charles's, Avogadro's Laws, Dalton's, and Graham's...

The fourth presentation in a series of five begins with information about the nature of gases and what to expect from them. Then it discusses kinetic molecular theory, diffusion, and Graham's Law, and concludes with the purification of...

Calculating frequency is so easy it Hertz! The video begins by describing transverse and longitudinal waves, and then it explores their properties and applications. Finally, it applies this to the formulaic relationships between wave...

Why do some smells, like popcorn, linger when others seem to vanish as quickly as they arrive? Learners think through that concept then complete an online simulation to determine if temperature and/or mass affect diffusion. Next, pupils...

Teach your class how to get out of a cell — or break in. The third installment in a seven-part series introduces the class to cell membranes and their functions. The lesson plan includes information to present to the class,...

Viewers follow the paths of oxygen and carbon dioxide through the human respiratory organs and the path of the molecules through the human circulatory system, in a short video about how the body delivers oxygen and picks up carbon dioxide. 

Wouldn't it be great to learn about cells through osmosis? Introduce learners to the different mechanisms of active and passive transport with a video that shows how the different transports occur across the cell membrane, allowing only...

We know that gases move throughout and out of our bodies, but why? And how? Learn about gas movement by analyzing rates of effusion. Additionally, watch an interesting precipitate reaction using gases to apply effusion, diffusion, and...