Preview Teacher Packet. Provide one copy per student of Student Pages 1 thru 3. Print Edusoft Teacher Score Sheet to scan results.

Transcripción

1 Preview Teacher Packet. Provide one copy per student of Student Pages 1 thru 3. Print Edusoft Teacher Score Sheet to scan results. Administered May 2007

2

3 Objective The student is able to describe, predict, measure, and weigh soil samples. Science TEKS 3.11B, 3.2A, 3.2D, 3.2C, 3.11C Materials Scotch tape Sandy soil Potting soil 2 cups cylinder Procedure Conduct the tasks. Hand lens Double pan balance 100 ml beaker or graduated Gram stacker weights Crayons - white, brown, tan, grey, black Rubric Use the following rubric to score student performance. Go over rubric with students before the test. Rubric for Third Grade Performance Assessment Task The student was able to The student minimally correctly describe the described the textured texture of the materials. of the material. Texture of the Materials Color and Grain Size Mass Equal Materials Greater Mass Actual Mass Renewable Resource The student was able to correctly describe the color and grain size. The student was able to correctly measure equal amount of material. The student was able to correctly determine the greater mass. The student was able to correctly determine the actual mass. The student minimally described the color and grain size. The student made a prediction with a justification (right or wrong). The student demonstrated minimal understanding of measuring equal amount of material. The student had difficulty determining greater mass. The student had difficulty determining actual mass. The student knows that soil is a renewable resource. able to describe the texture of the materials. able to describe the color and grain size. The student made a prediction without a justification. able to correctly measure equal amount of material. able to correctly determine the greater mass. able to correctly determine actual mass. The student does not know that soil is a renewable resource.

4 Name Date Science Grade 3 You have 2 types of soil on your desk. Complete the following tasks using these soil samples: sandy soil potting soil 1. Use a piece of tape to attach a small sample of each soil in the boxes above. Describe the texture of the sandy soil. Describe the texture of the potting soil. 2. Use a hand lens to view the samples above. Draw and describe the color and grain size of sandy soil. Draw and describe the color and grain size of potting soil. Student Page 1

5 3. Which type of soil has more mass on a double pan balance? HYPOTHESIS: Observe your 2 soil samples and predict which soil will have more mass when both soils are placed on a double pan balance. I predict that the will have more mass than the when placed on double pan balance, because. PROCEDURES: Test Your Prediction Use a 100ml Beaker or graduated cylinder to measure out 100ml of sandy soil and 100ml of potting soil. Place the samples into 2 separate cups from the double pan balance. Place both of the soil samples on each side of the balance to test your prediction. SOIL A SOIL B Sandy Soil Potting Soil 4. Which soil appears to have more mass when you place both soil samples on the balance? Student Page 2

6 Use your data to determine which Soil sample has more mass. 5. Use the gram stacker weights to get the actual mass of each soil sample. SOIL MASS Soil Type Sandy Soil Potting Soil Mass in Grams 6. According to the data you recorded in the table above, which soil sample has the most mass? 7. Soil is a resource. (circle one) renewable non-renewable inexhaustible To be completed by teacher: Circle the student s score for each question. Add the points and write the total on the Student Rubric Score below. Question Question Question Question Question Question Question Student Rubric Score Student Page 3

7 Nombre Fecha Ciencia Grado 3 Usted tiene 2 tipos de suelo en su escritorio. Termine las tareas siguientes usando estas muestras del suelo: suelo arenoso suelo de maceta 1. Utilice un pedazo de la cinta para pegar una pequeña muestra de cada suelo en las cajas arriba. Describa la textura del suelo arenoso. Describa la textura del suelo de maceta. 2. Utilice una lupa para observar las muestras de arriba. Dibuje y describa el color y el tamaño de grano del suelo de arena. Dibuje y describa el color y el tamaño del grano del suelo de maceta. Student Page 1

8 3. Qué tipo de suelo tiene más masa en una balanza de platillos? HIPÓTESIS: Observe sus 2 muestras de suelo y prediga cuál suelo tendrá más masa cuando ambos se colocan en una balanza de platillos. Predigo que el tendrá más masa que el cuando está colocado en una balanza de platillos, porqué PROCEDIMIENTOS: Pruebe su predicción Utilice un vaso de precipitación de 100ml para medir 100ml o probeta graduada del suelo arenoso y de 100ml de tierra de maceta. Coloque las muestras en 2 tazas separadas en la balanza de platillos. Coloque ambas muestras del suelo en cada lado de la balanza para probar su predicción. SUELO A SUELO B suelo arenoso suelo de maceta 4. Cuál suelo aparenta tener más masa cuando usted coloca ambas muestras del suelo en la balanza? Student Page 2

9 Utilice sus datos para determinar qué muestra de suelo tiene más masa. 5. Utilice las masas extras para la balanza para conseguir la masa real de cada muestra del suelo. SUELO A Tipo de suelo Suelo arenosa Suelo de maceta Masa en gramos 6. Según los datos que usted registró en la tabla, que muestra de suelo tiene la mayor cantidad de masa? 7. El Suelo es un recurso. (círculo uno) renovable no reanudable inagotable To be completed by teacher: Circle the student s score for each question. Add the points and write the total on the Student Rubric Score below. Question Question Question Question Question Question Question Student Rubric Score Student Page 3