Against The Grain

Category Archives:unschooling

6 Dry Ice Experiments To Do With Kids

6 Dry Ice Experiments To Do With Kids What is Dry Ice? It is sometimes referred to as "cardice" and is the solid form of carbon dioxide. At pressures below 5.13 atm and temperatures below −69.5 °F, CO2 changes from a solid to a gas with no intervening liquid form, through a process called sublimation. The opposite process is called deposition, where CO2 changes from the gas to solid phase (dry ice). At atmospheric pressure, sublimation/deposition occurs at−109.3 °F. 6 ways to Read More


Oobleck When Josh told me he wanted to make Oobleck I thought he made up a weird word for something...then he taught me what Oobleck is and it is pretty cool! Oobleck is a type of non-Newtonian fluid. Most fluids we know of are considered Newtonian fluids. Non-Newtonian fluids are a strange and perplexing group of fluids. When a force (ex. poking, rolling, stirring) is applied to a non-Newtonian fluid, the viscosity (resistance to flow) of the fluid increases. Applying pressure to the Read More

Dry Ice Fun

Dry Ice Fun Joshua is very interested in science. He watches and learns about science for hours each day. As an unschooling family, we allow them to learn what they want, when they want to! His passion for science has grown significantly since we made our transition from homeschooling to unschooling. So, it is my husband's job to feed this science interest of Joshua's! Today they chose dry ice. He came home with a big block of dry ice and Joshua was really excited. He has watched a ton of Read More