1. Review of Controls and Variables My rabbit usually eats carrots, but I want to see if other vegetables will make her jump higher. I feed her spinach one day and measure her jumps. Then I feed her broccoli the next and measure her jumps. I compare it to her normal jumping height.

2. Questions What is the independent variable? Type of vegetable What is the dependent variable? Jump height What is the control? Carrot What should be kept constant?

3. Observation & Inference

4. Observations Any information collected with the senses. Quantitative – measureable or countable »3 meters long »4 marbles »50 kilograms »35 degrees Celsius Qualitative – describable, not measureable »red flowers »smells like fresh baked cookies »Tastes bitter The skill of describing scientific events

5. Inference Conclusions or deductions based on observations. The process of drawing a conclusion from given evidence. Practice: Observations: I hear people screaming I smell cotton candy, popcorn, and hamburgers I see a lot of people Inference = ?

6. Another Example Observations: –I see gray clouds. –I see puddles on the walkway. –I hear thunder in the distance. What do you infer?

7. Look at these two sets of animal tracks. List 3 OBSERVATIONS Make an INFERENCE

8. Now what do you think? Make 3 OBSERVATIONS Make an INFERENCE

9. Now what do you think? Make 3 OBSERVATIONS Make an INFERENCE

14. Observation Lab Directions -You will be rotating to different stations. -At each station, you will find an item to observe both qualitatively and quantitatively. These go on the left. -On the right, you will “infer” meaning from your observations. -Also, work on drawing neat scientific drawings and labeling size.