Free Printable Math Worksheets -- Eraserdog.com kidfriendlymath Math Expression: Free Math Tutor Online Free Printable Math Worksheets at DadsWorksheets.com Cleave Books Math Printable Worksheets Factoring a Quadratic Trinomial by Grouping Another method for factoring these kinds of quadratic trinomials is called factoring by grouping. Factoring by grouping can be a bit more tedious, and is often not worth the trouble if you can find the correct factors by some quick trial and error. However, it works quite well when the factors are not immediately obvious, such as when you have a very large number of candidate factors. When this happens, the trial and error method becomes very tedious Factoring by grouping is best demonstrated with a few examples. Example: The Procedure Given a general quadratic trinomial ax2 + bx + c 1. 2. hk = ac (h and k are factors of the product of the coefficient of x2 and the constant term) h + k = b (h and k add to give the coefficient of x) 3. ax2 + hx + kx + c 4. (ax2 + hx) + (kx + c) x(ax + h) + (kx + c) (note: because of the way you chose h and k, you will be able to factor a constant out of the second parentheses, leaving you with two identical expressions in parentheses as in the examples).
Interactive Whiteboard Resources: Maths, Key Stage 2 - Topmarks Education Caterpillar OrderingTablet friendly A flexible game for ordering numbers and for number sequences. Fantastic on an interactive whiteboard and tablet friendly. Varying levels of difficulty make it suitable for use throughout the primary age range. OrderingFlash You'll love this ordering game! Compare Numbers on a Number LineFlash Compare numbers on two different number lines and decide which is bigger. Comparing NumbersFlash A teaching tool which is good for demonstrating greater than and less than with 2 and 3 digit numbers and rounding to 10 and 100. CountersquareFlash A hundred square with movable counters and lots of different ideas on how you can use this as a teaching aid. Higher and LowerFlash Lots of examples of ordering numbers from simple ordering numbers to 10 to fractions, decimals or negative and positive numbers. Thinking of a NumberFlash Children need to guess a number below 100 from clues on the clouds. Chinese Dragon GameTablet friendly SequencesFlash EstimateFlash Number LineFlash
Donna Young's Homeschool Resources and Printables