Chronic constipation includes those people with fewer than five bowel movements per week. Understanding the causes of constipation helps determine appropriate treatments. Changes in diet, schedule, stress, and age alter the way our body...

Could you imagine having a kidney stone the size of a coconut? Viewers learn about the largest kidney stone ever recorded in a video that explains what kidney stones are and how they form. Then, it details multiple procedures to treat or...

The human body produces about 1.7 liters of saliva a day to aid in digestion. Here is a video that explores the digestive system, highlighting the difference between mechanical and chemical digestion. Scholars then see each organ of the...

Sharpen up those scalpels, it's time to dissect some frogs! This step-by-step guide walks young biologists through this surgical process, helping them to identify major organs and unique anatomical characteristics of these amphibious...

Nurb is selling tongues. He pitches his product by showing all of the amazing tasks it can perform. Cute cartoon characters, colorful animation, and preteen-appealing humor make this clip a "terrific tool for tasteful teaching." (How's...

In the setting of a variety show, Nurb sings onstage about human teeth. He goes through the progression of how they grow, when they are lost, and when wisdom teeth come in. He chirps about the different types of teeth and what roles they...

With articles entitled, "What's Puke?" and "What is a Fart?" this digestive system lesson is sure to be a gas! Elementary anatomists do a belly dance to illustrate how food moves through the digestive system and then design a board game...

After an explanatory introduction to sugars and enzyme activity, biochemists discover whether lactase is needed to digest lactose, sucrose, and milk as a whole. High school science lab skills are required for these investigations.

Survey the metabolism process from respiration through the production of the ATP molecule with this seven page AP biology worksheet. Pupils write short answers on the lines provided and label a diagram of the cellular respiration process. 

Have you ever wanted to use a whoopie cushion during a middle school class? If so, then this is the lesson for you! Pupils conduct an experiment to observe the build-up of gases as food breaks down. While recognizing the role of giggling...

Have you ever wondered why some people are lactose intolerant? Participants test simulated patients in a hands-on lab activity to find out! They learn about lactose intolerance by performing an experiment, analyzing data, and drawing...

Like it or not, passing gas is part of life ... almost all life! Flatulence has many different purposes in different species including communication, defense, and buoyancy. Pupils learn where farts come from and what contributes to their...

Milk meets every single nutritional need for a baby in the first six months of life. Observe how an infant's small intestine breaks milk lactose down into a usable form of nutrition. With the help of an animation, viewers see the process...

Not all fat is bad—eating good fats actually helps with weight loss. Learn how the body uses fat through a 27-slide presentation that breaks down the path fat takes from entering to exiting the body. Understanding why fat is helpful and...

Cells of different organs have unique cell functions. Learn how cell functions vary depending on their roles in the body using an inquiry-based activity. Scholars analyze the cell structure to make comparisons to its functions, allowing...

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...

Ever wonder why it takes awhile to feel full when you eat a meal or snack? Follow food in its fantastic, 40-hour journey through your body with a video about the digestive system! Young anatomists explore the process of digestion,...

Which has more calories, a cupcake or a rat? The odd question grabs pupils' attention as they learn about food as fuel in an intriguing installment of the PBS food science playlist. The video explains how scientists use a bomb...

Scientists study the gut bacteria in ants to better understand their digestive process. Brain Scoop presents the proper way to dissect ants as part of their Insects playlist. The video shows the steps and explains why each is necessary...

Does perfume really contain whale excrement? Only the most expensive varieties! An intriguing video lesson explains the origin of the ambergris ingredient through a tour through the sperm whale's digestive system. Scientists only...

Would you believe that your digestive system stretches to five times your height?! Help your pupils to understand this relationship as they work through the laboratory exercise. The first instructional activity of a 12-part series is a...