Archive


 * There will be a test on Transformational Geometry on Tuesday, December 16.

**November/December, 2008** We are presently working on //Transformational Geometry.//

__Definitions__ __Rotation__ (turn) To rotate an object means to turn it around. Every rotation has a center and an angle.

__Translation (slide)__ To translate an object means to move it without rotating or reflecting it. Every translation has a direction and a distance. __Reflection__ (flip) To reflect an object means to produce its mirror image. Every reflection has a mirror line. A reflection of an "R" is a backwards "R". http://mathforum.org/sum95/suzanne/symsusan.html

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[|Common Number Patterns]

Other Links: [|BBC - Schools - KS2 Bitesize Revision - Maths] [|Funbrain.com's Number Cracker Game] [|Math Forum - Ask Dr. Math] [|Number Patterns-NLVM] _____________________________________________________________________________________________

February/March/April, 2009** We are presently working on //Whole Numbers//. There will be a test on April 30. Topics include: Mental math strategies, adding, subtracting, multiplying, dividing, and problem solving.

The Big Ideas: - The position of a digit in a number determines its value. - There are patterns in the way numbers are formed. - Large numbers are best understood in terms of real-world referents. - Exponential notation is a powerful way to express repeated products of the same number. - Flexible methods for computation require a good understanding of the operations and their properties. - Estimation plays an important role in all computations. (From //Math Makes Sense//, Pearson Education Canada)

[|Place Value Charts] [|Online Math Learning] [|Multiples]  [|Prime Numbers] [|Mental Math]

Using Mental Math 1. Compatible numbers are pairs of numbers that are easy to compute: 60 + 35 + 40 = (60 + 40) + 35 = 100 + 35 = 135

2. When no regrouping is needed, start subtracting from the left: 687 - 463 = 223 --->

3. Rearrange and use compatible numbers: 4 x 19 x 25 = 19 x (4 x 25) = 19 x 100 = 1900

4. Break one of the numbers apart to make numbers that are simple to work with: 6 x 27 = 6 x (20 + 7) = =  =(6 x 20) + (6 x 7) = 120 + 42  = 162