Powerful Classroom Assessment: Super Grow Fertilizer Student Responses for Planning an Investigation SR1

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1 SR1 Hypothesis: The plants will be taller and have more leaves if they have more room to grow because there will be more nutrients available to each plant. : 8 containers all the same size pea seeds, all the same type, soil mix, Thermometer, water, fertilizer, ruler, graduated cylinder Procedure: 1. Label 2 containers A, 2 B, 2 C, and 2 D. 2. Put the same amount of soil and fertilizer into each container. 3. Plant 2 pea seeds in each A, 4 in each B, 6 in each C, and 8 in each D. 4. Make sure the pea seeds in each container are planted at the same depth and spaced evenly in the container. 5. Put all of the containers where they will get the same amount of light and the same temperature. 6. Give each container 100 ml of water. 7. Every 3 days, water each container and measure and record the height and number of leaves on each plant. 8. Repeat step 7 for 4 weeks. 1 November 10, 2004

2 SR2 Hypothesis: If the plant has more space it will be shorter and have more leaves : 3 pea plants, soil, water, 3 different sized pots (for the plants), ruler, a light sources and a pencil and paper Procedure: -Plant 2 week old plants in 3 different sized pots -Fill pots with same soil. -Water each plant once every 6 hours -Keep each plant at the same temperature with the same amount of light. -After 2 weeks measure the heighth and count the leaves. -Compare data from different plants. 2 November 10, 2004

3 SR3 Hypothesis: The more growing space for pea plants would make the pea plants healthier, measured by plant height and number of leaves : Three containers with grow poles labeled #1, #2, & #3, three sizes, pea seeds all the same type, soil mix, thermometer, water, ruler Procedure: 1) Put equal amounts soil mix into containers #1, #2, and #3 2) Plant 10 seeds in each container with seeds in container #1, 2 inches apart, container #2, 4 inches apart, and container #3, 6 inches apart 3) Water each container equally each day. 4) Be sure each container gets equal amount of light and stays at temperature 20 C. 5) Record height and number of leaves of pea plants in each box. Compare. average each boxes number of leaves and height 3 November 10, 2004

4 SR4 Hypothesis: More growing space will make plants taller with more leaves because there is more room for them to get air. : Two containers labeled #1 and #2, Pea seeds, all the same type, Soil mix, Super Grow fertilizer, Thermometer, Water, Measuring cup Procedure: 1. Put equal amounts of soil mix in containers #1 and #2. 2. Add Super Grow fertilizer to the soil mix in container #2 in a concentration recommended by the manufacturer. 3. Plant 15 pea seeds in each container. 4. Water each container equally every day. 5. Be sure each container gets the same amount of light and stays at a temperature of 20 C. 6. Record the number of pea seeds that germinate. 7. Record the time (number of days) for the pea plants to mature. 4 November 10, 2004

5 SR5 Hypothesis: Plants grow better if they have more space. : 3 containers, all the same, soil, identical pea seeds, water Procedure: 1. Put soil in all the containers. 2. Plant 1 seed in the first container, 2 in the second and 4 in the third. 3. Water them and put them in a window. 4. Measure how tall they get every day. 5. After they are tall enough, the experiment is done. 5 November 10, 2004

6 SR6 Hypothesis: A plants with more growing space will grow larger, because it would have space to alow it to : two pea seeds, two pots w/equal amouts of soil, water, tow places of different size Procedure: 1) plant pea pods in each pot 2) place pots in tow rooms of diffrnt size 3) wat each plant regualy w/ same amout of water 4) make shure each plant gets same amout of light 5) mesur size of plant each day for both plants. 6 November 10, 2004

7 SR7 Hypothesis: I think that if plants have plenty of space then they will be more healthy : Two pots, potting soil, water, space big enough for two plants, and grow poles Procedure: In the procedure two different plants are grown. One plant is grown with plenty of space. Another plant is grown with not an appropriatte amount of space. The plants are grown for 75 days, watering accordingly and giving them an appropriate amount of sunlight, making sure the temperature is the same in both. At the end of the 75 days Check which one is healthier. 7 November 10, 2004

8 SR8 Hypothesis: If the pea plants had more room to grow then they would be healthier, taller with more leaves, because they would have more nutrient to gain from the soil : 1 large pot, 1 small pot, water, soil, measuring tape Procedure: Manipulated variables- size of space to grow controlled variable-amt of seeds/water responding variable-growth of plants 1) Fill pots with soil 2) plant plants 3) give water 4) record height and number of leaves 5) repeat two weeks 8 November 10, 2004

9 SR9 Hypothesis: If the plants have more room to grow then they will grow taller with more leaves because they will have more nutrients to absorb to help pod and leaf production : 30 pea seeds, 2 containers, soil mix, water, ruler Procedure: 1. Place equal amounts of soil mix in each container 2. At one end, cluster 10 seeds together and at the other spread 5 seeds out. Do this to both containers 3. Water both the same amount each day for 30 days 4. Make sure both get the same amount of sunlight at all times. 5. Make sure both have the same temp. at all times. 6. Measure the plants height and number of leaves after 30 days 7. Repeat process again 9 November 10, 2004

10 SR10 Hypothesis: The more growing space the healthier the plants because more leaves can grow to capture light and the plant can grow taller with al that energy. : small pea plants all the same height with the same number of leaves, containers all the same, soil mix with Super Grow, thermometer, water, ruler Procedure: 1. Put equal amounts of soil mix in each container. 2. Plant one plant in 3 containers as the experimental control condition. 3. Plant two plants in 3 containers, three plants in 3 containers, and 4 plants in 3 containers. Make sure all the plants are planted the same. 4. Water each container equally every day. 5. Be sure each container gets the same amount of light and stays at a temperature of 20 C. 6. Measure and record the height and number of leaves for each plant at the end of every week for 7 weeks. 10 November 10, 2004