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Science - 2nd Grade
Standard 1 Objective 1
1 class periods of 60 minutes each
Students work together as a class to generate a science fair project. The students use the steps of the scientific method to ask a question, form a hypothesis, design a test, collect data, and draw conclusions. Their findings are presented to the class and placed on a science fair project board for the school science fair. The topic of this project is to find out whether students can construct a shape out of clay that will float.
A ball of clay will sink because the density of the ball is higher than the density of the water. However, if that same ball of clay is changed into a shape that has its mass more spread out over a larger area, its density will decrease.
If the new structure has a density lower than water, this shape will float. Usually forming the ball of clay into a boat or pancake shape will cause it to float as long as water doesn't creep into the structure and sink it.
Pre-lab Discussion: Show the students a ball of clay and ask them if they think it will sink or float. Place the ball into a tub of water and observe the results. Ask for ideas on what they could do to the ball of clay to get it to float. Explain to them that they will experiment on what shapes of clay sink and which shapes float. Discuss with the students what a science fair is and tell them that they will complete a science fair project today in the classroom.
I. Experiment: Complete the experiment first and then work on writing the assigned sections for the project board.
II. Science fair display board: Assign each group a different section of the class science fair display board. Each group can decide what to write and then help the students take turns writing the different words on a half sheet of paper. Students will write up their section and then place it in the appropriate area on the display board. If you take pictures of the students working on the project you can put them on the board as well.
|Left Panel||Center Panel||Right Panel|
|Why we did the project||Title||What we learned|
|What we think will happen||Tables, pictures|
|How we did our project||drawings||Name of teacher|
Rio Tinto Hands-on Science Curriculum Team