1. March 27, 2017 Starters Week 4-2 Monday
GLE 0707.Inq Students investigated four different brands of disinfectant wipes. The students rubbed each brand of wipe on a different desk. They collected a bacteria sample from each wiped desk with a cotton swab, then transferred the bacteria to a petri dish. The students also took a bacteria sample from an unwiped desk. After three days, the students compared the amount of bacterial growth in all five petri dishes. Which of these was the experimental control? A. the sample with the greatest amount of bacterial growth B. the sample from the unwiped desk C. the length of time the bacteria was allowed to grow D. the number of brands of disinfectant wipes tested

2. *What is the dependent variable in this investigation?
March 27, Monday
2. Students put a spring launcher on a wooden floor. The students applied different amounts of force on a marble with the spring. They used a meter stick to measure how far the marble rolled. GLE 0707.Inq.1
*What is the dependent variable in this investigation?
mass of the marble
Amount of friction from the floor
amount of stretch in the spring
distance traveled by the marble

3. March 28, Tuesday
1. What organ system sends signals from the brain to the muscles? GLE
circulatory C. nervous
digestive D skeletal
GLE
2. Which organ system is correctly matched with its main function?
A.  The excretory system defends the body from disease-causing organisms.
B.  The nervous system controls body responses to the environment.
C.  The skeletal system distributes energy throughout the body.
D.  The digestive system removes waste products from the body.

4. A. amount of water C. type of plant
March 29, Wednesday
Students want to determine which type of plant will best survive in a hot, dry environment. They place four different types of plants in identical pots, and put all of the plants by the same large window. They give each plant the same amount of water every day.
Which of these is the independent variable for the students’ experiment? GLE 0707.Inq.1
A. amount of water C. type of plant
B. health of plant D. amount of sunlight

5. March 29, Wednesday
2. A student rolled a toy car down a ramp and timed how long it took to reach the bottom. After one trial, the student doubled the height of the ramp and added sandpaper to its surface. The student conducted three more trials. After reviewing the data, the student concluded the height of the ramp had no effect on the speed that the car traveled.
Which is the most likely reason this conclusion is flawed? GLE 0707.Inq.1
A. More trials were needed during the investigation.
B. The student misunderstood how to calculate speed.
C. A control should have been added to the investigation.
D. Too many variables were changed during the investigation.

6. March30, Thursday
1. Which sequence correctly shows the order from simplest to most complex in multicellular organisms? GLE
A. cell - organ system - tissue - organ
B. cell - tissue - organ - organ system
C. organ system - organ - cell - tissue
D. organ system - organ - tissue - cell
2. In a multicellular organism, such as a fish, which of these items is composed of all the others? GLE
A. Tissues C. cell structures B. Organs D. organ systems