Science - 3rd Grade
Standard 5 Objective 1
Classroom activities help students understand that gloves do not provide heat, but rather, they will insulate or hold in any heat that is in their hand.
Heat is the name given to the flow of energy from hotter to cooler objects. Temperature is used to measure the amount of heat energy. A temperature reading is the average amount of energy movement in a substance. The molecules in cold things move very slowly and the temperature smaller. The molecules in hot things mover very quickly, and the temperature rises. Hot substances usually expand when heated.
When a hot substance comes in contact with a cold substance, the heat energy will flow from hotter to colder until the objects become the same temperature.
Insulators are materials that block the flow of heat, while conductors are materials that allow heat to flow easily. Sometimes students believe that insulators are really heat sources, because they seem to make things warm, or heat things up. Insulators will stop the heat from flowing, so things that are warm tend to say warm. but they are not a heat source. Good insulators include plastics, air, fabrics that hold air, feathers, or other similar materials.
1. Use a Science Process and Thinking Skills
3. Understand Science Concepts and Principles
Pre-Assessment/Invitation to Learn
Invite a student to come to the front of the room, and hand the student an ice cube to hold (can be put in a sealable bag). Ask the student what is happening. Clarify that the ice is not bringing cold to the hand, but that the heat is moving from the warm hand to the ice cube, until eventually they become the same temperature. When their hand is cold, sometimes people also believe that it is their gloves that keep them warm.
Grading student worksheet:
|10 points||correct, complete, detailed|
|8 points||partially correct, complete, detailed|
|6 points||partially correct, partially complete, lacks some detail|
|5-1 points||incorrect or incomplete, missing data, needs help|
Homework & Family Connections
Insulator Activity in "My Book About Heat and Light."
If you have gone over both how heat flows and if gloves keep hands warm, then you may have students complete the true/false What I Know About Heat worksheet (pdf).
Another assessment is to use the Heat Story worksheet (pdf) and have students write what they know about heat.