1. 8th Grade Science Content Strand 1 1a relates to all other objectives
Inquiry
8th Grade Science Content Strand 1
1a relates to all other objectives

2. 1a.Independent Variable
The part of an experiment that changes because it is controlled by the experimenter and is used to affect the dependent variable
Typically found on the outer parts of a data table
Color
Heat absorption each minute
red
black
blue
green

3. Heat absorption each minute
1a.Dependent Variable
The part of an experiment that changes because it is affected by the independent variable
The amount or type of change is measured
Typically found inner parts of a data table
Color
Heat absorption each minute
red
70C
80C
90C
100C
black
130C
160C
blue
8.50C
9.40C
10.10C
green
110C

4. 1a. Constant
Things that remain the same in an experiment in order to make data more reliable and valid
Ex. Same type of soil, plant, amount of sunlight, & environment

5. 1a. Control Group
The part of an experiment that does not receive the independent variable
Ex. The last plant did not receive fertilizer when testing which fertilizer works the best

6. 1a. Logical
Makes the most sense & is based on the data or information in the paragraph

7. 1a. Validity and Reliability
Validity- whether an experiment is accurate
Experiment follows design of scientific method
Control group
Constant variables
IV & DV
Reliability- whether an experiment is repeatable
Same results every time.
Good use of constants

8. 1.b&c Making Observations & Collecting data for conclusions
Observation- information gathered directly through senses.

9. 1.b& c. Qualitative Data that is not measured or counted. Color
Presence of bubbles
Formation of a solid

10. 1.b&c. Quantitative Information using numbers: Mass (5g) Length (2m)
Temperature (22OC)
32 students in class

16. 1.d. Analysis & Inferences
Analyze the data (look for patterns)
Inference- Make a conclusion based on evidence in the experiment
Evidence must come from the data/investigation

18. 1.g Revising conclusions
Revise: To change in order to improve or make better
Think about parts of the scientific investigation

21. 1.h. Skepticism
Causes one to doubt or change your mind based on new evidence and leads to new investigations

22. Example ?

23. 1.e. Justify/defend Conclusions
Underline the conclusion you are justifying & Look for evidence in the data
Supports – look for positive answer choices
Does not support – look for the negative answer

30. f. Perfectly designed solutions do not exist.
Highlight the solution & decide if it is flawed
Most of the time the solution will be flawed
Choose the most logical reason it will be flawed based on info in the question

32. Test taking Tips

33. Read all answer choices before selecting a final answer
Eliminate answer choices
Watch for distracters
Circle/underline key words (vocabulary)
Read the question before & after reading the answer choices
Identify which content/objective the question is related to
Write notes on scratch paper
Flag all questions you have some doubts
Watch out for “absolute” word answers (ex. Always, never, none, all, only)