Shape, Space and Measure Resources. 2D Shapes Properties of Quadrilaterals Dominoes- a superb set of dominoes that gets pupils to explore the shape properties of quadrilaterals. Made by the excellent www.notjustsums.com website and published on www.tes.co.uk Shape properties of quadrilaterals investigation- a super NRich Maths investigation into shape properties of quadrilaterals Angles Properties of 2D Shapes Investigation- investigate the angle properties of 2D shapes.
A nice creative activity Do The Nonagon- a funny YouTube video about polygon names 2D Shape Names Prezi- an engaging Prezi showing 2D shape names Polygon Shape Properties Top Trumps- a wonderful collection of Top Trump cards based on shape properties of polygons 2D Shape Reveal Game- an excellent game where a 2D shape is slowly revealed and pupils have to guess the shape from it’s properties 3D Shapes MathsNet 3D Shape Resources- a selection of excellent interactive applets based on 3D shape activities. NRich Maths What Does The Cube Look Like? Angles Area Bounds. Four-triangle Arrangements. Well, equilateral triangles are great fun to play around with (try Triangle Animals if you haven't already!) But let's not forget the right-angled triangle - particularly the kind that comes from cutting a square in half through a diagonal. We could take 4 of these and have something like this: So we can make some rules about how we can re-arrange these four triangles.
Here's a usual rule - EACH SIDE MUST MATCH UP TO A SIDE THAT'S JUST THE SAME LENGTH AND THEY MUST HAVE THEIR VERTICES TOUCHING. The four arrangments above would obey the rule. So, using plastic, paper, card or other triangles, what arrangements can you make with four right-angled isosceles triangles like the ones at the start? Like in so many investigations it's good after a while to change a bit of the rule and start again. For example the red and orange ones we've already seen above are now allowed: Others might be: Now it's your turn. PatrickJMT. Mental Math. Mental Math - A Guide to Effective Mental Calculations[edit] Note about Notation: This book generally uses the English/U.S. styles of notation. This includes using commas as a way to divide up the thousands in long numbers (e.g. 32,000 = thirty-two thousand), it will use full stops (periods) as decimal points.
Calculating things in your head can be a difficult task. If you can't remember what you've worked out or simply don't know how to solve a problem then it can be very challenging and frustrating. But by learning and practicing the methods of using mathematical patterns, you can dramatically improve the speed and accuracy of your arithmetic. These methods are often called "High Speed Mental Math". With good mental math skills you can save yourself time by not needing to pull out a calculator (or cell phone) every time you want to do a task.Mental math skills will improve your ability to estimate results, thus having a better ability to catch errors from computer-derived results.
Visual Math Learning: A Free Online Tutorial for Teaching Math. BBC Two - The Approximate History of Maths. Cool Math Games - Free Online Math Games, Cool Puzzles, Mazes and Coloring Pages for Kids of All Ages.