How Big Is A Big Number
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How Big is a Big Number?
What, how and why? If you don′t really understand the content of the primary mathematics curriculum, how can you teach it? This beautiful full colour book is here to help. It covers all you need to know to be an effective teacher of primary mathematics. It shows you how to explore number, shape and pattern with the children you teach. It examines what we mean by ′mastery of mathematics′ and reviews what we can learn from Asian maths teaching methods. It helps you to see how areas of mathematics fit together and how you can support children to build their own understanding of the subject. This book goes beyond showing you how to teach. It shows you that process is as important as product. That getting it wrong can be as useful as getting it right and that children can′t really learn the what without understanding the why.
Big Numbers
A very lively but informative treatment of the concept of big numbers, expressed in quantities of peas. The book begins with a single pea on a plate and progresses from 1 to 10 to 100 to 1000 all the way to a quadrillion (which form a small mountain that covers the town in which the original lone pea sat on a plate). Children will love the visual playfulness of the ever-growing quantity of peas and the sidecomments they generate. The final page shares the authors' various calculations with the reader.
How Big is Big and How Small is Small
This book is about how big is the universe and how small are quarks, and what are the sizes of dozens of things between these two extremes. It describes the sizes of atoms and planets, quarks and galaxies, cells and sequoias. It is a romp through forty-five orders of magnitude from the smallest sub-nuclear particles we have measured, to the edge of the observed universe. It also looks at time, from the epic age of the cosmos to the fleeting lifetimes of ethereal particles. It is a narrative that trips its way from stellar magnitudes to the clocks on GPS satellites, from the nearly logarithmic scales of a piano keyboard through a system of numbers invented by Archimedes and on to the measurement of the size of an atom. Why do some things happen at certain scales? Why are cells a hundred thousandths of a meter across? Why are stars never smaller than about 100 million meters in diameter? Why are trees limited to about 120 meters in height? Why are planets spherical, but asteroids not? Often the size of an object is determined by something simple but quite unexpected. The size of a cell and a star depend in part on the ratio of surface area to volume. The divide between the size of a spherical planet and an irregular asteroid is the balance point between the gravitational forces and the chemical forces in nature. Most importantly, with a very few basic principles, it all makes sense. The world really is a most reasonable place.