Today in class students took the Surface Area and Volume Test.
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Today in class students did a great job with practicing finding the surface area and volume of different shapes. Got to work on knowing the difference between area and circumference of a circle!
Answers to HW: page with the cubes at the top... 1. 20 cubes 2. 8 cubes 3. 28 cubes 20 cubic units 8 cubic units 28 cubic units 4. 840 cubic cm 5. 288 cubic in 6. 1302 cubic cm 7. 1800 cubic cm 8. 611.8 cubic m 9. 9.9 cubic m 10. 3,617.3 cubic ft 11. 2,034.7 cubic cm 12. 106 cubic cm 1. 50 cubic cm 2. 320 cubic ft 3. 600 cubic m 4. 78 cubic m 5. 336 cubic in 6. 32.7 cubic mm page with nets of prisms and cylinders... 1. 294 square in 2. 88 square mm 3. 226.1 square in 4. 376.8 square cm 5. 502.4 square m 6. 2,009.6 square ft page with changing dimensions...we took notes about this; draw a couple of pictures and remember that area will have 2 new measurements, and volume will have 3 new ones 1. with a scale factor of 5 changing two dimensions, (5)(5) = 25 times the old area of 10 = 250 square in 2. 135 square m 3. 1,024 square cm 4. 160 square m 5. 900 square in 6. 729 square cm 7. with a scale factor of 2 changing three measurements, (2)(2)(2) = 8 times the old volume of 7 = 56 cubic yd 8. 1,728 cubic cm 9. 351 cubic m 10. 960 cubic ft 11. 2,875 cubic mm 12. 6,480 marbles page with the half full tanks of water... 8. 34,300 square cm 9. 19,320 square cm 10. 310 square ft 11. the container needs 720 cubic cm to fill it; after filling it up you need to pour out 960 cubic cm to leave it 1/3 full 12. the tank holds 864 cubic cm Today in class students practiced finding the volume of rectangular and triangular prisms, then added finding volume of pyramids to their bank of knowledge. Test Monday.
Today in class students reviewed surface area, took a 3 problem quiz, reviewed the quiz solutions, and then began to study out finding the volume of shapes.
Answers to HW: 12x5x5 rectangle V= 300 cubic ft SA= 290 square ft 9x15x10 rectangle V= 1350 cubic cm SA= 750 square cm 11x8x16 rectangle V= 1408 cubic cm SA= 784 square cm 8x6x7 rectangle V= 336 cubic in SA= 292 square in Today in class students reviewed surface area of rectangular and triangular prisms, then moved on to cylinders and pyramids.
Answers to HW: pyramid #4 66.4 square inches great pyramid #5 1,282,500 square feet cylinder #3 1639.08 square cm cylinder #4 489.84 square in cylinder #5 2198 square cm cylinder #6 351.68 square in, so no Jule does not have enough paint Today in class students reviewed how to find the surface area of a rectangular prism, and then moved on to learn about triangular prisms. We also touched on finding the volume of a rectangular prism.
Answers to HW: triangular prism 115.6 square meters rectangular prism #1 418 square meters rectangular prism #2 158.26 square inches rectangular prism #3 101.38 square inches Today in class students checked over their HW on naming 3D figures. We played with Geogebra and watched a really nice, and short, video about cross sections of those 3D figures. We worked to figure out the cross sections resulting from cutting a cube from several different directions.
Today in class most students did not complete their practice of geometric probability, so we spent some time calculating it together. We are moving on to study surface area and volume.
Today in class students worked in homogeneous groups to work out how to use area to determine geometric probability.
Today in class students completed the 2D Geometry test, and then moved on to take notes while viewing a video about Geometric Probability.
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October 2018
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