Q1 L1 · Quiz
Weekly quiz · Control Group Experiments
Assessment Appendix — Grades 9–12 · Week 1 Quiz
Quarter 1, Week 1 · Lessons 1.1–1.2 · Control Group Experiments; The Challenge
| # | Item | Answer / look-fors / scoring | Pts | Lesson · standards |
|---|---|---|---|---|
| 1 | Which term matches this description? A procedure in which one or more variables are changed on purpose to see the effects on other variables. | (B) experiment. | 1 | L1.1 · HS.L2U3.18, HS.L1U1.20, U1, 9-10.SL.1, 11-12.SL.1 |
| 2 | Which term matches this description? The comparison group that does not get the treatment but is otherwise the same. | (B) control group. | 1 | L1.1 · HS.L2U3.18, HS.L1U1.20, U1, 9-10.SL.1, 11-12.SL.1 |
| 3 | Which term matches this description? All conditions are the same except the independent variable. | (A) fair test. | 1 | L1.2 · HS+B.L2U1.1, HS+E.E1U3.10, HS.L1U1.20, U1, 9-10.SL.1, 11-12.SL.1, HS-ETS1-3 |
| 4 | Which term matches this description? Half the plot gets the treatment; the other half is the control grown the normal way. | (A) treatment and control groups. | 1 | L1.2 · HS+B.L2U1.1, HS+E.E1U3.10, HS.L1U1.20, U1, 9-10.SL.1, 11-12.SL.1, HS-ETS1-3 |
| 5 | Choose the word or phrase that best completes the sentence: An experiment changes one thing on purpose and compares the result to a ________. Without the control, we cannot say what caused the result. | (C) control group. | 1 | L1.1 · HS.L2U3.18, HS.L1U1.20, U1, 9-10.SL.1, 11-12.SL.1 |
| 6 | Constructed response: Constructed response. Answer each part in complete sentences. | 3 | L1.1, 1.2 · HS.L2U3.18, HS.L1U1.20, U1, 9-10.SL.1, 11-12.SL.1; HS+B.L2U1.1, HS+E.E1U3.10, HS.L1U1.20, U1, 9-10.SL.1, 11-12.SL.1, HS-ETS1-3 | |
| (a) What is an experiment? | A procedure where the researcher changes one variable on purpose to see its effect on another. | 1 | ||
| (b) Why is a control group needed? | It gives a comparison so we can tell whether the treatment caused the result. | 1 | ||
| (c) Write your problem statement using the sentence stem. | “What is the effect of ___ on the growth of radishes?” with one safe, measurable variable. | 1 | ||
| 7 | Data analysis: A germination trial compared soaked seeds with unsoaked seeds. | 3 | L1.1 · HS.L2U3.18, HS.L1U1.20, U1, 9-10.SL.1, 11-12.SL.1 | |
| (a) Calculate the percent germination for each treatment. | Soaked 82.5%; control 40.0% | 1 | ||
| (b) Calculate the percent difference of the soaked group relative to the control. | 106.2% (((33−16)/16)×100) | 1 | ||
| (c) Identify the independent and dependent variables. | IV: soaking (soaked vs not soaked); DV: number/percent of seeds germinated. | 1 |