Good day to you girls and boys,
Now that we are understanding using formulas, we have another one- Volume of Pyramids . Pyramids are the the 3-D shape that has one base and comes to a point- example: the great pyramids of Egypt that you studied last year. These bases can be different shapes and what that shape is, determines the name of the pyramid. For instance a square base is called a square pyramid- a triangle base is called a triangular pyramid. Sounds reasonable right? Another vocabulary term you need to know is a Lateral Face. These are the flat sides that meet at the vertex. THE TRICK IS to find the height of the pyramid! The height is as if you are dropping a line from the vertex to the base inside the pyramid. The height ALWAYS comes to a right angle. So be careful, when using the formula, look for the height of the pyramid to be inside and forming a right angle. The slant side is the lateral face. The formula for VOLUME of a PYRAMID is V = 1/3 lwh.
Look over the videos and ask questions.
This is Flash, an injured squirrel that Izzy found in her yard. Hope he gets better.
As always in MATH,
Mrs M
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