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Die ergste plaag denkbaar tref Laerskool Tierkop: kopluise! Nina en Jessie kom toevalllig af op bewyse dat die plaag deur ‘n tydelike onderwyseres, juf. Morkel, begin is. Maar waarom sal sy die skool se naam skade wil doen? En hoe gemaak om die luise uit te roei, EN die skuldige aan die kaak te stel? Die hoof en ander onderwysers sal mos nooit twee graad vyfs se storie glo nie. Gelukkig is die Entrepreneursdag om die draai, en Nina en Jessie weet presies hoe om hulle plan uit te voer. Hulle het net die hele skool se samewerking nodig . . .

Don't Just Learn Word Problems… Master Them! Brimming with fun and educational games and activities, the Magical Math series provides everything you need to know to become a master of mathematics! In each of these books, Lynette Long uses her won unique style to help you truly understand mathematical concepts with common objects such as playing cards, dice, coins, and every mathematician's basic tools: paper and pencil. Inside Wacky Word Problems, you'll discover how to decode many different types of word problems-from counting, logic, and percentage problems to distance, algebra, geometry, and graphing problems-in order to solve real-world dilemmas. While you play exciting games like Measurement Jeopardy and Percentage War, you'll learn how to identify word cues, develop reasoning skill,s and spot key formulas that will help you solve any problem with ease. You'll also boost your math skills as you enter into crazy contests with your friends, create mystery word problems, and play word-problem charades-and have a great time doing it! So why wait? Jump right in and find out how easy it is to become a word-problem master! Also available in this series: Dazzling Division, Delightful Decimals and Perfect Percents, Fabulous Fractions, Groovy Geometry, Marvelous Multiplication, and Measurement Mania, all from Wiley.

How do rocks change shape? Why does Venus rotate «backwards»? How do tigers talk with their tails? Do bigger ears hear better? Discover the answers to these and many other weird and wild mysteries in astronomy, biology, chemistry, earth science, and physics. Janice VanCleave's 204 Sticky, Gloppy, Wacky, and Wonderful Experiments gives you hours and hours of hands-on, low-cost scientific fun. Try these safe, easy-to-do experiments at home or in the classroom: construct a lunar calendar to examine the phases of the moon, observe the feeding of ants to find out how they communicate, and build a model of Galileo's thermoscope to measure how different materials change temperature. With so many amazing projects to choose from, you'll have a blast learning about the world around you.