Lesson Title:
Lab Investigation Mixture Separation
Quick overview:
This investigation is to help reinforce the idea that a mixture can be taken apart by physical means. It will be set up as a contest in which they will have 1 hour of class to separate as much pure substance as they can. These will be broken into percentages and the winner will receive a treat of their choice.
Student Objectives
Main Objectives: Students will create a method to separate out a mixture of common materials.
Task Objectives:
1. Hand out problems the day before class gets done
2. Next day in class allow students to begin to work
3. Watch as they work though materials
4. Weigh and measure group results
5. Report winners and collect and assess lab reports
Explanation of the lesson:
This lesson may be might with some whining because it is a little difficult for the students to imagine different ways with the different materials however it is a good practice towards student based learning. The students will receive the lab report below that they need to separate the mixture. I will also give them a list of materials that will be available to them. They have the night to think about how they will separate the solution through the use of different physical processes. Their main objective is to separate as much of the pure substances as possible.
Set up the lab using the materials listed below for the students before they arrive. They will also be working in pairs so have a sample of the mixture in test tubes. They are to take one test tube and begin working immediately. Walk around and observe what is going on, answer most of the questions with the phrase, “maybe you can think of a way to do that.” Once students have as much of the substances sorted out then take percentages of the total amount and add them together. The group with the highest percentage wins and will get a treat of their choice. Collect all of the other labs and check them over.
Materials needed for the lesson:
- Lab Investigation Mixture Separation (link)
- Lab Investigation Mixture Separation Check (link)
- 60g of mixture made of
o 15g of Sand
o 15g of Salt
o 15g of Iron Filings
o 15g of Poppy Seeds
- At the labs
o Petri Dishes
o Wells
o Micro funnels
o Tape
- At the center table
o Roll of Cellophane
o Test tubes
o Rubber Stoppers
o Roll of Al Foil
o Wooden splints
o Plastic Forks
o Pipets
o Filter Funnel
o Filter Paper
o Forceps
o Tissue Paper
o Paper Towels
o Straws
o Paper Clips
o Distilled Water
o Magnets
Resources available on this topic:
- TR Book pg 826-7:8 & 832-833
Standard
- II.A.9
Assessments
- Lab Investigation Mixture Separation ANS 15pts (link)
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