Evidence 3 After reading the method of this study, four 7th graders drew what the scientists had put in each jar. For each of the next four drawings, decide if the students were right or wrong. NEXT

YES NO dark light Here’s the first drawing. Is this drawing correct? 25 g of chloroplasts 25 g of chloroplasts One thing is missing. >> the meter to measure carbon dioxide and oxygen levels (I wanted to put the lid on the first one, so that they can see what the lid looks like.) YES NO (If this is your first time on this page, write your answer in 5 B, Box 1.)

YES NO dark light There are two errors. Here’s the second drawing. Is this drawing correct? dark light Carbon dioxide meter Carbon dioxide meter 50 g of chloroplasts 50 g of chloroplasts There are two errors. 25g of chloroplasts in each jar. There is no airtight lid! The meter measures only CO2, not oxygen. YES NO (If this is your first time on this page, write your answer in 5 B, Box 2.) 3

YES NO dark light There are two errors. Here’s the third drawing. Is this drawing correct? dark light Carbon dioxide and Oxygen meter Carbon dioxide and Oxygen meter 50 g of chloroplasts 50 g of chloroplasts There are two errors. 25g of chloroplasts in each jar. There is no airtight lid! YES NO (If this is your first time on this page, write your answer in 5 B, Box 3.)

YES NO dark light Here’s the fourth drawing. Is this drawing correct? Carbon dioxide and Oxygen meter Carbon dioxide and Oxygen meter 25 g of chloroplasts 25 g of chloroplasts This is correct. YES NO (If this is your first time on this page, write your answer in 5 B, Box 4.)

CORRECT! Nice Job! There is something missing. You know what that is, don’t you? If not, double check the text to be sure. Click next to check the next student’s drawing. BACK NEXT

TRY AGAIN!! There is something missing. Read the methods again to find out what is missing, and try again. BACK

CORRECT! There were 3 errors! Did you see all 3? If not go back and look for the others. Then click next. BACK NEXT

TRY AGAIN!! There are 3 errors! Read the methods again to find out what the errors are, and try again. BACK

CORRECT! There were 2 errors in this picture. Did you find both of them? If not go back to the text and try to find both errors. Then click next. BACK NEXT

TRY AGAIN!! There are two errors. Go back and look at the methods and check the picture again. This picture is missing the air tight lid and should only have 25g of chloroplasts in each jar. BACK

CORRECT! Great Job! This picture is correct! Click next to see the results of this experiment. BACK NEXT

Read the methods again then go back and look closely at the picture. TRY AGAIN!! Read the methods again then go back and look closely at the picture. BACK

Results! Click next to see the results come in. BACK NEXT

The jar has been in the light for 10 minutes Carbon Dioxide Oxygen High light Normal Carbon dioxide and Oxygen meter 25 g of chloroplasts Low 10 20 30 Minutes BACK NEXT

The jar has been in the light for 20 minutes Carbon Dioxide Oxygen High light Normal Carbon dioxide and Oxygen meter 25 g of chloroplasts Low 10 20 30 Minutes BACK NEXT

The jar has been in the light for 30 minutes Carbon Dioxide Oxygen High light Normal Carbon dioxide and Oxygen meter 25 g of chloroplasts Low 10 20 30 Minutes BACK NEXT

The jar has been in the dark for 10 minutes Carbon Dioxide Oxygen High dark Carbon dioxide and Oxygen meter Normal 25 g of chloroplasts Low 10 20 30 Minutes BACK NEXT

The jar has been in the dark for 20 minutes Carbon Dioxide Oxygen High dark Carbon dioxide and Oxygen meter Normal 25 g of chloroplasts Low 10 20 30 Minutes BACK NEXT

The jar has been in the dark for 30 minutes Carbon Dioxide Oxygen High dark Carbon dioxide and Oxygen meter Normal 25 g of chloroplasts Low 10 20 30 Minutes BACK NEXT

What differences do you see from the data from the two jars? What do you conclude from this study? Dark Light Normal Low High 10 20 30 Minutes Carbon Dioxide Oxygen Carbon Dioxide Oxygen High Normal Low 10 20 30 Minutes BACK NEXT

See the Results Again!! BACK