Countries around the world waste huge amounts of food every year: roughly a fifth of food items in the US are tossed because consumers aren't sure how to interpret expiration labels. But most groceries are still perfectly safe to eat...

Jessi teaches Squeaks all about recycling, and together, they recycle his old crayons to make cool new ones!



Second Grade Next Generation Science

Standards

Dis

ciplinary Core Idea:

PS1.B: Chemical...

Imagine a police lineup where ten witnesses are asked to identify a bank robber they glimpsed fleeing the scene. If six of them pick the same person, there's a good chance that's the culprit. And if all ten do, you might think the case...

Food can't stay fresh forever. From moldy bread to brown apples, here's the science behind what happens when food goes bad.

Tango, waltz, foxtrot ... these classic ballroom dances quietly perpetuate an outdated idea: that the man always leads and the woman always follows. That's an idea worth changing, say Trevor Copp and Jeff Fox, as they demonstrate their...

Anand Agarawala presents BumpTop, a user interface that takes the usual desktop metaphor to a glorious, 3-D extreme, transforming file navigation into a freewheeling playground of crumpled documents and clipping-covered "walls."

It's time to design some trials. Sometimes engineers need to figure out how to test ideas. In order to do that, we need to design trials to find failure points and see how things are going to work in the real world (with gravity, wind,...

More trials! This time we need to figure out what to do if you don't have all the things you'd like to have to perform your tests. How do you isolate a variable across multiple tests? A good engineer will work to find a way to make it...

Do you know how many people have been to the moon? Only 12! Part of the reason it's so few is because of how difficult it is to escape Earth and get into space in the first place. In this episode of Crash Course Kids, Sabrina talks about...

Composting becomes more widespread and accessible all the time, keeping millions of tons of food waste from ending up in landfills every year. But there is one quirk of some composting programs that can be a little annoying: they don't...

Scientists believe that your taste receptors are meant for taste, but how do they explain the taste receptors on your lungs?

A video entitled "Independent Events" which shows how to tell is two events are dependent or independent.

How to Dispose of Expired Medications

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