Melissa Suffield
Misty Vine
Math and Science Methods
11-11-98
LESSON INFORMATION- 2nd grade activity using the value of money with addition and subtraction. The students will also be working with a science experiment pertaining to chemical reactions.
KEY IDEA OR TITLE- Operations of Whole Numbers and Chemical Reactions
GOAL- Math Process: Problem Solving Math Product: Number Operations
Science Process: Observing Science Product: Chemical Reactions
PREREQUISITE- Students will have to know the value of money, addition and subtraction.
LESSON ACTIVITIES:
Objectives: The students will review their understanding of the value of money.
Materials: Play money (already separated and placed at each table), priced items to be used in the play store such as stuffed animals, canned food, books, etc., and a price list(already written on board before the activity.
Introduction to Lesson: Begin the lesson by displaying the different coins and then randomly asking the students how much each coin is worth. Continue doing this exercise with every coin we have available.
Procedure: After the initial review of money, the teachers will explain the store that is in the front of the room and the activities with the items in the store. To demonstrate our instructions, one of the teachers will shop in the store with only five dollars while the other teacher records and explains the amount of money the first teacher is spending in the store.
Evaluation: Explain to the students that the will now be doing this activity and the money that they will use is on the table as a reference. Also explain that they have a five dollar limit to shop with. Ask for a thumbs up if they understand and a thumbs down if they have question.
Objectives: The students will further their knowledge of the value of money by shopping at the store. They will also be using addition and subtraction to find out how much money they have spent and how much money they have left over.
Materials: Play money and each student needs a piece of scratch paper
Procedure: The students will pick out various items they would like to buy from the store and write each item's price down on their paper. They will then keep track of the money they spent by adding the prices as they go along and then subtracting it from their five dollars. The students will do this until they have used as much as they can of their five dollars.
Evaluation: Monitor each group's progress and understanding by walking around the room and answering questions. Randomly pick students to explain the items that they bought and the amount of money that they used.
Objectives: The students will discover that some of the items that they may have bought in the store can have a chemical reaction.
Materials: Wintergreen lifesavers, playdough, baking powder, vinegar, food coloring, top of an aerosol can, hand mirrors
Procedure: The teachers will explain the experiment that they will perform using the wintergreen lifesavers. Each student will receive a lifesaver with instructions to take it out of the wrapper but not to put it in their mouth yet. The students will also need to have a partner that is sitting next to them. When everyone is ready, the lights will be turned off and the students can then put the candy in their mouth with instructions to chew the candy immediately with their mouth open. The reasoning for this is that the students will be looking in each other's mouth's to see the chemical reaction that is taking place.
Evaluation: When the lights are turned back on, the teachers will then ask the students how they think they chemical reaction took place. The teachers will also provide the real explanation for it if none of the students figure it out.
Extension: The teachers will perform another experiment using the baking powder, food coloring, vinegar, playdough, and the top of the aerosol can. The one stipulation is that the students will not know what ingredients are involved in the experiment until after the experiment is completed. Then the teachers will explain that tomorrow the class will be working more with chemical reactions.
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