1. Ask questions Investigate Communicate results
What do scientist do?
Ask questions
Investigate
Communicate results

2. Vocabulary Lesson 1
Scientist – a person who asks questions about the natural world
Science – the study of the
natural world

3. Observation – information collected by using the five senses
Investigation – a procedure
carried out to gather data
about an object or an event
Hypothesis –an idea or explanation that can be tested with an investigation
Inference – an untested conclusion based on observations

4. Inference – an untested conclusion based on observations

5. Vocabulary Lesson 3 Data - bits of information you observe
Microscope – a tool for looking at objects that cannot be seen with the eye alone
Pan balance – used to measure mass with units called grams (g)
Spring scale -use to measure force in units called newtons (N)

6. Lesson 5 Model – something that represents the real thing
Two-dimensional model – a type of model that has length and width (like a map or diagram)

7. Three-dimensional model – a type of model that has length, width, and height
Computer model – a type of model made with a computer program that acts like the thing