measurement lesson 2, part 1

MEASUREMENTLESSON 2, PART 1

BIG IDEA: A standard unit of measure is necessary for consistency in communication between people. The standard system of measurement used in science is the metric system.

oWhat does the object look like?oWhere have you seen it before?oWhat is it used for?oWhat do you think it is?

KIT INVENTORY

There was once a very brave knight that was trying to rescue the princess from the evil dragon. He had encountered many puzzles in his attempt to rescue her. He was almost there, but then he found that there were two puzzles remaining. If he solved the first puzzle, the door to the castle could be opened. The solution to this puzzle was to place three objects – a metal disk, a plastic chip, and a wooden square in order from heaviest to lightest. All he had to do this were some paper clips, a balance and two cups.

ENGAGING SCENARIOLESSON 2, PART 1

What is the problem in this investigation?What do you need to do?What materials do you have?

Focus QuestionHow can we…

I think that the order of the three objects from heaviest to lightest is ___________, __________, then ___________ because…

PREDICTIONWe are going to use a balance to determine and compare the mass of three objects. What are some ways we can compare the mass of objects to determine which is heaviest?

PLANNING AND ORGANIZING DATA

You now know that you are going to determine and compare the mass of three objects. How are you going to record the results and observations as you test? Discuss with your table group how you would like to record the results.

Objects # of paper clipsmetal diskplastic chipwooden square

Making Meaning Conference

As we look at our class data, discuss in your table groups the following questions:

• What does the data tell us about the order of our objects?

• What conclusions can you draw from the data?

• What new problem do we have?

Claims and EvidenceI claim that… because...

ConclusionThe evidence did or did not

support my prediction because…

Today I learned…Reflection

What really surprised me was…What would happen if we…?

What else do I want to know about determining or comparing the mass of

objects?

After the knight found out that the paper clips were not the same size and it would be difficult to use the paper clips to determine and compare the mass of objects, he went to a store where grain was sold to find out how the storekeeper could determine and compare the mass of objects. The storekeeper said that he used weights called grams that he put on one side of a balance and placed an object on the other side of the balance to compare and determine the mass of objects. He gave the knight a bag of gram weights to help him solve his puzzle. When the knight returned to the castle he found that the puzzle had changed. Now he needed to find the weight of a metal disk, a plastic chip, a wooden square and an apple in grams.

ENGAGING SCENARIOLESSON 2, PART 1 CONTINUED

What is the problem in this investigation?What do you need to do?What materials do you have?

Focus QuestionHow can we find the mass of the wooden square, metal disk, plastic chip and apple in grams?

I think that the weight of the metal disk is ___ grams, the plastic chip ___ grams, the wooden square ____ grams and the apple is ___ grams because…

PREDICTIONToday we are going to practice using grams to find the mass of objects. This will help us learn how to determine and compare the mass of objects using a standard measure.

PLANNING AND ORGANIZING DATA

You now know that you are going to determine the mass of several objects in grams. What is the best way to record the results and observations as you test? Discuss with your table group how you would like to record the results.

Object Mass in gramsmetal diskplastic chipwooden squareapple

Making Meaning Conference

As we look at our class data, discuss in your table groups the following questions:

• What does the data tell us about the mass of our objects?

• Were you able to find the weight for all the objects? Why or why not?

• What new problem do we have?

Claims and EvidenceI claim that… because...

ConclusionThe evidence did or did not support my

prediction because…

Today I learned…

ReflectionWhat really surprised me was…

What would happen if we…?What else do I want to know about determining or

comparing the mass of objects?

MEASUREMENTLESSON 2, PART 2

BIG IDEA: A standard unit of measure is necessary for consistency in communication between people. The standard system of measurement used in science is the metric system.

oWhat does the object look like?oWhere have you seen it before?oWhat is it used for?oWhat do you think it is?

KIT INVENTORY

The knight was finally inside the castle, but he still needed to solve one more puzzle to slay the dragon and rescue the princess. This puzzle was written on a piece of paper. Next to the piece of paper was a dry sponge and a bucket of water. The knight read the paper. He is what was written: “In order to slay the dragon and rescue the princess, you must solve one more puzzle. This puzzle will require you to use the sponge and the water in the bucket. Sponges are used to soak up water. You will need to find out how much water the sponge can soak up compared to how much the sponge weighs itself. You will need to compare the mass of the sponge to the mass of the water it soaks up. Solve this puzzle and you will slay the dragon and rescue the princess.”

ENGAGING SCENARIOLESSON 2, PART 2

What is the problem in this investigation?What do you need to do?What materials do you have?

Focus QuestionHow can we…

I think that the mass of the sponge is ___ grams and that it will be able to soak up ___ grams of water because…

PREDICTIONToday we are going to determine the mass of the sponge and the mass of the water it can soak up.

PLANNING AND ORGANIZING DATA

You now know that you are going to determine the mass of the sponge and the mass of the water it can soak up. What is the best way to record the results and observations as you test? Discuss with your table group how you would like to record the results.

Object Mass in gramsspongewater the sponge can soak up

Making Meaning Conference

As we look at our class data, discuss in your table groups the following questions:

• What does the data tell us about the mass of the sponge and the mass of the water it could soak up?

• How did you find the mass of the water the sponge could soak up?

Claims and EvidenceI claim that… because...

ConclusionThe evidence did or did not support my

prediction because…

Today I learned…

ReflectionWhat really surprised me was…

What would happen if we…?What else do I want to know about determining or

comparing the mass of objects?