Transcript Game
Variables! Objective: You will be able to identify independent variables, dependent variables, and controls in an experimental set-up. Itinerary: 1. Review Definitions/Relate to Experiment 2. GAME!! 3. Worksheet (finish for homework!) Vocabulary Words Definition Picture Word What you change in an Independent experiment (IV = I Variable (IV) Change) Dependent What you measure in an Variable experiment (DV) Control The “normal” group that the experimental group is compared to Game You want to test the effect of different soaps on the growth of bacteria. You put dove on one dish of bacteria, dawn on another dish, and nothing on another dish. You measure how many bacterial colonies are growing after 4 days. Independent Variable: Different soaps Dependent Variable: Growth of bacteria Control: Dish with no soap on it Game Beth wants to see if eating bananas will make her run faster. She tests her speed on 3 different days. On day 1, she eats no bananas. On day 2, she eats 1 banana. On day 3, she eats 2 bananas. Each day, she times how long it takes her to run the mile. Independent variable: Bananas Dependent variable: Run faster Control: Day 1 – no bananas Game You want to test the effect of colored light on the growth of marigolds. You set up five marigolds under blue light bulbs, five under red light bulbs, and five under normal growing lights. After 10 days, you measure how high they’ve grown. Independent variable: Colored lights Dependent variable: Growth of marigolds Control: Plants with no light Game You want to see what type of paper makes paper planes fly farther than normal notebook paper. Independent variable: Types of paper Dependent Variable: Fly farther Control: “normal” paper to make paper airplane Game You want to see what type of toothpaste makes teeth the whitest. Independent variable: Different toothpastes Dependent Variable: Whitest teeth Control: No toothpaste or generic/plain toothpaste Word Constant Definition The parts of the experiment that you keep the same every time you do it Picture