The interactive tool at Annenbeg's web page shows how to find the surface area of cylinders and prisms. The surface area is the sum of 2 ends of the cylinder and the middle section.
Middle= Circumference * height + Ends (2 * Area)
How would you verify and make sure that both containers have a volume of 750ml?
Inflatable games like the Maze Race we have at fun day were invented using mathematics concepts of surface area. Designers draw plans for the inflatable shapes. Volume is calculated to find the 'right amount' of air for each inflatable.
ReplyDeleteSurface area needs to be measured when the actual material is being measured and put together into the inflatable shapes.
Here's a link that includes both a video and a virtual 'shape maker' It focuses on exploring 3D concepts like surface area and volume.
www.learnalberta.ca/content/mejhm/index.html?l=0&ID1=AB.MATH.JR.SHAP&ID2=AB.MATH.JR.SHAP.SURF
The inflatable objects in the video are made from a combination of 3D shapes. Basic concepts of volume and design are starting points for using these creative ideas.
When you go on this website there is a fun game where you explore with shapes. To find the game you have to go on shape and space. Then you go on surface area and volume. The game is called Exploring Surface Area, Volume, and nets. It is very fun.
ReplyDelete-Edis
www.learnalberta.ca/content/mejhm/index.html?l=0&ID1=AB.MATH.JR.SHAP&ID2=AB.MATH.JR.SHAP.SURF&lesson=html/object_interactives/surfaceArea/use_it.html