11. DRY MIX

13. Experiment:
We want to determine which of three different fertilizers helps plants to grow the biggest. What are possible factors to consider?
Possible factors include:
amount of sunlight
room temperature
type of soil
type of fertilizer
amount of water
plant type

14. Experiment: Draw a data table to represent all of the factors.
Which of the following is the dependent variable?
Which are the constants. Why?
Which of the following is the control? Why?

18. Which of the following is accuracy, precision or both?
Remember:
Accuracy: The closeness of a given measurement to its true value, i.e. bulls eye.
Precision: The stability of that measurement when repeated many times, i.e. cluster.

21. Problem
Observation
Hypothesis
Experiment
Collect Data
Analyze Results
Conclusion
Report Findings

24. 1. Oreo Cookie Challenge
Do Double-Stuff Oreos actually have double the stuffing or regular Oreos?
Equipment: Scale, Beaker, Rulers, *Oreos and Double Stuff Oreos
*you may need to set some guidelines about eating the experiment items
2. Bounty Challenge: Which paper towels more absorbent generic paper towels or Bounty?
Equipment: Beaker, Graduated Cylinder, Scale, Rules, Water, Two types of towels
Dissecting trays or pans might help for catching water.
3. Surface Effect: How does surface are of a candy affect how quickly it dissolves in water?
Equipment: Smarties or sweet tarts (or any sugary dissolvable candy that can be cut into smaller portions), water, ruler, scale, *scalpel or blade, timer *requires safety discussion beforehand
4. Gum Challenge: Many gum brands claim that they have the longest lasting flavor. Design and conduct an experiment to determine what type of gum has the longest lasting flavor. clock, a variety of different types of gum
5. Polish Remover Challenge: Which type of polish remover works best, acetone or acetone free? fingernail polish, polish remover (2 types), dishes, lids, or other surfaces to paint on, variety is good so that student must consider the surface when conducting the experiment.