Today we did some activities involving the surface areas of
different shapes. Some of the shapes included prisms, spheres, cylinders, and
cones. We went over the formulas and then solved them based on the information
given for each shape. Many of the formulas included Pythagorean theorems so
find the missing sides of each shape. Some of the answers were solved in base
squares. Others had the pie symbols or were solved by incorporating the pie
formula with the answers. We also went over the formulas for the volume of the
shapes.
We did a class-group activity about the volumes of pyramids
and cones. We had to find the relationship between the volume of a pyramid and
a prism and then we had to find the relationship between a cone and a cylinder.
We used scissors and tapes to cut out and put together the shapes. We then
filled the pyramid-shape with rice and compared its volume with the
square-prism. We did the same thing with the cone and cylinder. The results
were mostly the same. The pyramid and the cone were both 1/3 the volume of the
square-prism and the cylinder. Students will enjoy this activity and find it
easier to understand the concepts of different volumes.
Here is a very helpful video on evaluating formulas of
volume of different shapes:
Students can refer to this website for volume formulas of
different shapes:
No comments:
Post a Comment