Bell Ringer

1
Bell Ringer

• In order to see which nine volt battery was the
• longest lasting, a student took 4 different
  batteries
• duracell, enercell, energizer eveready. She
• then inserted one of each battery in a separate
• alarm clock. All four alarm clocks were of the
• same style and from the same manufacturer. The
• duracell battery lasted 4.5 hours longer than the
  
• remaining three.
• What is the independent variable?
• What is the dependent variable?
• What was controlled?

2
Record And Analyze Data

• Write the data in both a chart and graph format.

3
Four Components of Graphing

• Specific title
• Labels with units
• Equal intervals
• Accurately recorded data

4
What is wrong with this graph?
5
Science Scenario

• Mrs. Cs class wanted to find out if bean plants
  grew taller if they were planted closer together
  or further apart. So the students labeled 3
  identical pots A, B C. They put 1 bean plant
  in pot A, 3 bean plants in pot B and 6 bean
  plants in pot C. Each pot was put by a sunny
  window and given 60mL of water each day. The
  students then measured the height of the plants
  everyday.
• What was controlled in the experiment?
• What is the dependent variable?
• What is the independent variable?

6
Data

• On the first day, the plant in pot A was 59mm,
  the average of B was 56mm and C was 54mm.
• After day two, A was 68mm, B was 62mm C was
  57mm.
• The next day, A was 78mm, B was 67mm C was
  60mm.
• On day four, A was 89mm, B was 72mm C was 63mm.
• The last day they measured the plants. Plant A
  was 100mm, B was 77mm C was 65mm.