Lesson Plan: Density
Lesson Plan: Density
Topic: Density of a Regular Solid
Objective: Students will be able to determine the mass and volume of a regular solid. They will compute the density of regular solids using the formula for density. Students will compare the buoyancy of the blocks in a glass of water. Do the blocks sink or float? If they float, how much of the block will be in the water?
NYS Learning Standards:
S2.3e- Collect quantitative and qualitative data
PS3.1a- Substances have properties such as density
PS3.1h- Density can be described as the amount of matter in a given amt. of space.
PS3.1i- Buoyancy is determined by comparative densities
M3.1a- Use appropriate scientific tools to solve problems about the natural world
M7g.2- Calculate the volume using given formulas and a calculator
M7m.2- Identify customary and metric units of mass
Materials: triple beam balance, calculator, metric rulers, blocks worksheet, containers of water
Methodology:
1. The teacher will review the procedure for computing the volume of a regular solid.
2. The teacher will review the procedure for determining the mass of a regular solid.
3. Students will be instructed that the mass is the dividend, the volume is the divisor, and the density is the quotient.
4. Students will be asked to work in pairs and compute the density of each block in a set of 3 (wood, metal, plastic).
5. Teacher will remind students that the density of water is 1.0g/cm3. Students will then determine if the block will sink or float based on their calculations.
6. Students will draw diagram illustrating whether or not the block will sink or float.
Summary:
In a short paragraph students will explain the relationship of density to buoyancy and support their explanation with mathematical ratios.
HW:
Complete worksheet on finding density of a regular solid
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