EQ: What is the purpose of a hypothesis in an investigation?

• Distinguish between observations and inferences.
• Write a hypothesis that can be tested.
• Use a hypothesis to design and carry out a scientific investigation.

EQ: How do test and outcome variables differ?

EQ: Why is a control group important in a scientific experiment?

• Identify test and outcome variables in an experiment. 
• Identify control and experimental groups in an experiment.

EQ: How might the results of a scientific investigation be analyzed in terms of evidence and validity?

EQ: What is the difference between repetition and replication?

• Collect and organize data.
• Design and carry out an investigation or experiment.
• Identify errors in a scientific investigation.
• Interpret and analyze data to defend conclusions. 
• Differentiate between repetition and replication.
• Explain replicable and evaluate use of repeated trials.

EQ: Why are precise measurements important?

• Identify proper scientific tools (balance, graduated cylinder, ruler).
• Make accurate metric measurements using appropriate scientific tools.