$19.95This pack is full of brain-busting puzzles and games that will test your brain power. Use the pen to write the answers on the wipe-clean cards.
Prepare to blast off on an exciting math journey. Countdown to Space makes learning an out-of-this-world adventure - anywhere and any time.
This on-the-go kit includes:
Legend has it that the first magic square, where all lines and diagonals add up to the same figure, was revealed more than 2,000 years ago when a river turtle appeared to have ancient Chinese numerals inscribed on sections of its shell.
Patterns are everywhere in nature, and counting, measuring, and calculating changes are as old as civilization itself, as are many of the theorems and laws of math.
Over many centuries, great minds puzzled over the evidence and, step-by-step, edged ever closer to the truth. Behind every one of these breakthrough moments there is a story about a confounding puzzle that became a discovery and changed the way we see the world.
We call these Ponderables.
Includes a removable concertina housed in the back of the book providing a 12-page Timeline History of Mathematics.
This highly regarded book is ideal for those who wish to solve a variety of practical and recreational problems in astronomy using a scientific calculator or spreadsheet.
Peter Duffett-Smith and Jonathan Zwart