Math League Blog: May 2013

Sunday, May 26, 2013

Probability Review

http://www.mathsisfun.com/data/probability.html
Open the above link and read over all the information. When you are done take the quiz and do the activities.

Perimeter
Add up all the sides (measurements) together
* Remember for perimeter answer using whatever unit is used in the question.

Area of 2D Polygons
L (length) x W (width)
is the formula for all polygons (a closed 2D shape that has sides made form straight line segments)

Area of a Parallelogram

Area of a 2D Triangle
B (base) x H (height) ÷ 2
*Always remember to include the units (cms, m, kms)!!! You must remember to include a ²for surface area.

Surface Area of a Rectangular Prism (3D Shape)

Remember 3D shapes have faces!
Label the shapes opposite faces A, B, C (just like we did in class)

L x W x 2
Then add up all of the surface areas
* For surface area you need to include a ²as part of your units

Finding Surface Area of a Triangular Prism
1.     Label faces (A, B, C, D). * Remember that only the triangles faces will be labelled A, all other faces may be different measurements, so they need to be labelled separately (as B,C,D) just like we did in class.
2.     Find the surface area of the triangular face (B x H) ÷ 2 x 2 (because there are two triangular faces)
3.     Find the surface area of each of the remaining faces (B,C, D)
L x W (for each of the remaining faces)
4.     Add up all of the surface areas
* For surface area of a triangular prism you need to include a ²as part of your units

Triangular-Prism-Homework-Question-1hmwv27

Volume

Wednesday, May 22, 2013

Math Review - due Friday

1. ixl- decimals-B.8 decimal number lines
          measurement -L.2 /L.3/L.4
          geometry - x.16/x.30/x.31
          statistics - z.30

Monday, May 20, 2013

Measurement Review - due Thursday, May 23rd

1. Go to Geometry in IXL - complete

x.30
x.31
Using these shapes -
2. Explain how you figure out the area of a...     a) parallelogram   b) triangle   c) rectangle

3. Explain how you figure out the volume of a...   a) rectangular prism   b) triangular prism

4. Explain how you figure out the total surface area of a...    a) triangular prism b) cube
c) rectangular prism