Turn Dirty Water Into Clean Drinking Water in 5 Minutes [Video]


Dirty drinking water is a leading cause of death among infants and children in developing countries. Giving people in developing countries clean water to drink will reduce the risks of water-borne illness and allow children to attend school more often because they’re not out sick. Mark Rober demonstrates how a small packet from the P&G Children’s Safe Drinking Water (CSDW) Program can clean turbid water in no time.

Scratch That Coding Itch with Ryan Swanstrom – WHS 242

Scratch 3.0 was released in January 2019 and includes a number of great new features including the ability to create and play projects on a tablet.

Ryan Swanstrom joins me today to discuss Scratch 3.0 and how homeschoolers can use it to teach their kids how to code, for free!


Ryan is a homeschool dad, computer programmer, and data scientist who helps homeschool parents integrate programming and technology into their curriculum with online courses and a weekly/monthly newsletter. He and his wife homeschool their 5 children in South Dakota, USA. Continue reading “Scratch That Coding Itch with Ryan Swanstrom – WHS 242”

How does a whip break the sound barrier? [Video]

You probably already know that the crack from a bullwhip is a mini sonic boom. It’s amazing to think that something you can control with your hands can move faster than the speed of sound.

In this video from Destin Sandlin at Smarter Every Day, he uses a recording technique that shows you the exact moment a whip breaks the sound barrier.

Dash and Dot Pick the Super Bowl 53 Winner

For the past four years, my kids and I have programmed Dash and Dot to randomly pick the Super Bowl winner.

Last year, they picked the Eagles. Who will they pick this year and will their prediction be correct?

You can watch the previous years’ predictions in the playlist below.

What other things could we do with Dash and Dot?

Disclosure of Material Connection: Some of the links in the post above are “affiliate links.” This means if you click on the link and purchase the item, I will receive an affiliate commission. In some cases, I may have been given a free sample of a product to review. I am disclosing this in accordance with the Federal Trade Commission’s 16 CFR, Part 255: “Guides Concerning the Use of Endorsement