CONCEPT: Heat and light are related forms of energy and come from various sources.
CONTENT OBJECTIVE: 2C2.00 To understand other sources and uses of heat and light
INSTRUCTIONAL OBJECTIVES: The learner will:
2.01 describe alternative sources for heat and light use.
2.02 describe how heat and light are used in the home.
OUTLINE OF CONTENT:
I. Sun as a source of light and heat
II. Light and heat use in the home
III. Alternative sources of light and heat
TN COMPONENT OF SCIENCE: Process Of Science
To enable students to demonstrate the process of science by posing questions and investigating phenomena through language, methods and instruments of science
1.2 QUESTIONING - The development of an inquisitive mind and the effective use of questioning techniques furthers the acquisition of information.
TN STANDARD(S): The learner will understand that:
1.2a Initial information and prior knowledge are used to ask questions.
BENCHMARK: Students have natural curiosity causing them to raise questions about the world around them.
1.2b Questions may be structured so that they can be investigated scientifically.
BENCHMARK: Students will seek answers to questions by making careful observations.
1.2c Not all questions can be answered.
BENCHMARK: Some events are predictable while others are uncertain.
One hour (May be divided into two instructional periods.)
Classroom Connector One
(Outside on playground) Go touch the slide. Thumbs up if the slide was too hot to touch or slide down. (response) Today, we will find out why some objects are more warm than others.
What do you see in the sky to give off light? (response) When we touched things in the sunlight, what did we feel? (Heat) The sun is the earth's nearest star and it shines all of the time. We may not see it or feel its warmth because of clouds or night time. We get heat energy and light energy from the sun.
Children, follow me. Go around the playground and find warm things to touch. Find things that are not as warm to touch. Children, come close so that you can hear my voice. Did you find a difference in the places we touched? All of you point to the place that you thought was the warmest. Now, point to the thing that was the coolest.
Thumbs up and thumbs down to answer questions.. (Use smiley face stickers for children to put on their thumbs for answers.) Does the sun shine everyday? (response) Can you always see the sun? (response) Does the sun make you feel warm? (response) Do we get light from the sun? (response) Can clouds hide the sun? (response) Do we see the sun at night? (response) Tell your neighbor two things about the sun.
Classroom Connector Two
candle, matches, pictures that give off light, heat, both, construction paper, magazines
Look around the room and find something that gives off heat or light. (response) We are going to find other sources of heat and light.
Heat and light energy come from various sources. The sun is one source. Petroleum, natural gas, and coal are other sources of heat. These are found in the earth. One way we get these sources to produce heat and light is by burning. (Light a candle) When I light this candle, I can feel the heat and see the light that is produced by burning the wick in the candle. Rub your hands together very fast and put them on your face. What do you feel? If you feel heat, show me thumbs up. You made heat energy by rubbing your hands together. We can also make heat by a chemical reaction. When I light this match it causes a chemical change which makes heat and sometimes light too. Some sources give us heat. Some sources give us light. Some sources give us both heat and light.
Have pictures of things that give off heat, light, and heat/light. Call on different children to come to the board. Give each child a slip of paper and have them label them one of the pictures appropriately. Ask other children to show thumbs up if they agree. Show thumbs down if they don't agree.
Today we talked about the sources of heat and light energy. Tell your neighbor one source of heat and light. (response) Heat and light come from many sources by rubbing, burning, and mixing chemicals.
Classroom Connector Three
Bulletin board or poster board with large picture of house, pictures of objects that give off heat or light, teacher-made ditto with these objects on it, representative of local electric system, magazines, glue, scissors,
Look around the room and find something that gives off heat or light. (response) Today, we will find how heat and light are used in our homes.
Heat and light are used to keep us warm, to cook our food and to provide light for seeing at night.
Have bulletin board or poster with large drawing of a house. Have examples of heat, light, heat/light. Do not label them. Call on different children to come to the bulletin board. Give each child a slip of paper and have them label one of the objects, on the bulletin board, appropriately. Ask other children in the classroom to show thumbs up if they agree. Show thumbs down if they don't agree. (Example: A child would write an H on his slip of paper and pin it by the dryer.)
Today we have talked about uses of heat and light in a home. Look at the bulletin board we made today. Whisper to your neighbor one source of heat and one source of light. (response) (summarize)
INDEPENDENT PRACTICE / ENRICHMENT OPTIONS:
1. Children find or cut out pictures of heat and light energy being used. Cut and glue on paper.
2. Children write a poem about THINGS THAT ARE HOT (fire, sunlight) THINGS THAT ARE NOT (ice cream, snow)
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