Observing Properties of Matter
Grade level(s):Grade 3
Topic:Properties of Matter
Matter has properties that can be observed or measured
Before lesson: matter
During lesson: property
What you need:
Overhead projector, overhead of data sheet, 20 magnifying glasses, one large clear bag of popped popcorn, one container of sand, and one container of gravel for each pair, data worksheets for all students
Students will observe two materials and compare their properties. They will use this information in a later lesson to help them predict whether an equal amount by weight of the two materials will take up the same amount of space (volume). This will lead to a discussion and activity about density.
Students will learn the meaning of the word "property" when used in science.
They will be able to identify properties of specific materials.
Students will develop prerequisite skills needed to identify if a new substance is formed when two substances are combined.
Supplementary Third Grade Matter Kit or make up 10 containers of sand and ten containers of gravel and make an overhead copy of the data worksheet
Lesson Implementation / Outline
Today we are going to look very closely at two different materials to find out how they are alike and how they are different. Later, we' ll do a science experiment using these two materials, so we want to find out as much as we can about them.
1. Show materials - sand and gravel
2. Introduce the concept of a property of a material.
We're going to get more information about each material by using our senses – Who remembers the fives senses that people have?
3.Write down list of senses used to perceive properties
looking, touching, listening, tasting and smelling are the senses that people use to observe things.
4. Define the term "property"
Anything that we can observe about a material with our senses, or anything that we can measure, is called a property of that material. We'll be looking for these properties.
5. Practice observing properties of a material as whole group
Let's practice looking for properties by using a different material – popcorn!
(show a big clear bag of popcorn)
6. Display the Properties List
See – size, color, shape, if it smears, if it clumps, if the particles of the material are stacked closely or if they have space in between them,
Feel – smooth, rough, hard, bumpy, heavy, light, thick, runny, cold, hot
Hear – makes a sound when dropped on a table
Smell – sour, sweet, smells like ________
Taste – but not in this science investigation!-sour, sweet, bitter, salty
7. Ask questions about the bag of popcorn using examples from the list.
8.Call a student volunteer up to look at the bag of popcorn with a magnifying glass. What properties does she/he observe?
9. Give directions for observing the sand and gravel-
Tell students that it's their turn to investigate the properties of sand and gravel. Ask them to first observe individual pieces of gravel and of sand by putting a few pieces on a black piece of paper and then observe many pieces of gravel together and of sand together when they are in the containers.
10. Hand out data sheet. Put on overhead of data sheet.
Look on your data sheet to see where to record the name of your substance. Now look at the column labeled Properties. That's where you can record any of these things.(point to chart). Write down your observations . You may also wish to draw pictures that show different observations.
11. Share results of observations. compare and contrast the properties of sand with the properties of gravel. Create a group data sheet on these two substances.
Circulate among pairs and and question individuals about properties
Note oral responses to students reporting out
Assess writing and drawings on data sheet
Share results of observations. Compare and contrast the properties of sand with the properties of gravel. Create a group data sheet on these two materials.
Extensions and Reflections
This lesson is written as the first of two lessons that supplement the FOSS Energy and Matter Kit. The second lesson is "Investigating the Relationship of Mass and Volume." Students will use their observations of the two sustances to make a prediction for the testable question,"If I have two substances, gravel and sand, that weigh the same, will they also take up the same amount of space?" They will also be asked if any of the properties that they noted can explain the results that they got when testing the question.
|Examples of Properties of a Substance.doc||24 KB|
|Data Sheet for Mass and Volume of Substances Investigation.doc||25.5 KB|