Today Dr. Dower is coming to show us some different kinds of SOIL!
First, we reviewed with the kiddos what we already learned.
We know about soil being the correct word for "dirt."
We know about four different kinds of soil:
Sand, Humus, Clay, and Loam.
We know a little bit about weathering, which is how things get broken or worn down.
Today we'll be talking about separating the mixtures and dissolving materials in water.
After Dr. Dower left to go see another class, we wrote about what happened!
I give them the words I expect them to use, as well as some sentence stems for them to follow.
Dr. Dower came today to start off our new unit!
Our claim was..... we can use tools like levers and pulleys to change the location of heavy objects.
We started with two very strong friends holding onto poles. Then one littler student tried to pull those together. She couldn't do it! Even when she had help she couldn't do it! But, when she used the tool of a PULLEY, she was able to do it!!
Dr. Dower came today to talk to us about HEAT and how heat can change matter.
This goes with our TEKS:
5(A) I classify matter by physical properties, including shape, relative mass, relative temperature, texture, flexibility, and whether material is a solid or liquid;
5(B) I will compare changes in materials caused by heating and cooling.
5(C) I will demonstrate that things can be done to materials to change
6(A) I will investigate the effects on an object by increasing or decreasing amounts of light, heat, and sound energy.
2(D) I record and organize data using pictures, numbers, and words.
2(E) I will communicate observations and justify explanations using my own data.
1(A) I will identify and demonstrate safe practices like wearing safety goggles, washing hands, and using materials appropriately.
1(B) I will describe the importance of safe practices.
First, we introduced the Pentapus and where he lives. He lives on a planet that ONLY has water. He doesn't know about different states of matter because he only has liquid. He breathes liquid, he drinks liquid, he lives in liquid.
Doctor Dower (aka Ms. Dower's father) is a retired PhD scientist. He worked at 3M my whole life but now he spends his time traveling in his RV with my mom, singing in different bands and choirs, cooking delicious meals, and volunteering at my school.
My students and I are so lucky to have him around!
Today Dr. Dower came to teach us about matter.
There are three states of matter that we learn about in third grade: solids, liquids, and gasses.
We also talk about the physical properties and observable characteristics of matter.
Putting on his safety googles!!
Oooooohhh.
Pouring liquid nitrogen.
Demonstrating liquid molecules.
Liquid nitrogen!
Here's a video of Dr. Dower's balloon getting SO COLD that the air inside is turning from a gas to a liquid and even a solid. Then when it warms up, it turns back into a gas!