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| This lesson is made for a general third grade class room. |
Objectives:
| The students will be able
to say how snowflakes are made
and they make a 3- dimensional snowflake out of K'nex toys. They will also be able to describe how snowflakes are symetrical. |
Materials:
| Snowflakes, Sugar, and Salt by Chu Maki, Paper, pencils, K'nes toys, and snowflake design. |
Motivation:
| Today we are going to talk about snowflakes. Before we begin, I would like for each of you to draw a snowflake on you white paper. |
Procedure:
| 1. Read
pg.5 out of the snowflakes, Sugar, and Salt, which explains how Snowflakes
are made.
2. Ask the students to look at their snowflakes and see if they drew six equal sides. If they can’t tell have them fold their snowflake in half three different ways to see if each matches. 3. Now show the student the flat snowflake make out of K'nex. Point out it has six equal sides. Make sure the student know that no two snowflakes in nature look exactly alike. 4 Let the students experiment with the K'nex for a while. 5. Pass out the 3-D snowflake design.
Show the students an already made K'nes model of the 3-D snowflake.
Explain to the students that snowflakes are actually 3-D in nature
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| 6. Have the students work in pairs or small groups to build the 3-D snowflake. Remind the students that even though their K'nex snowflakes look alike no tow natural snowflakes will look the same. |
Evaluation:
| To see if the students understand, they will describe their own drawn snowflake. They will say what properties are missing and why it is important that each of their snowflakes are unique. The students will also describe how a snowflake is formed. The students will turn in their description in the form of a short hand written paper. |
Rescources:
| 1. Silver Burdett and Ginn Science. Teacher Edition
3. Silver, Burdett and Ginn Inc. 1987.
2. Maki, Chu. Snowflakes, Sugar, and Salt. Lerner Publications Company. Minneapolis. 1989. |