Magnetic Match Rings Children stack the mag- netic rings on the post to match the pattern card. Develop hand/ eye coordination while learning about magne- tism. Includes 40 chal- lenge cards. 2-4 players. Warning: choking hazard. PP38351 $16.95 Floating Magnetic Rings Children learn to pattern using colours and also begin to understand the properties of magnets. Includes 4 rings and a stand. Warning: choking hazard. PP38350 $4.45 each K’NEX® Intro to Simple Machines - Levers and Pulleys | Build 8 different replicas of real-world models, one at a time. Set includes building instructions for each model. Models demonstrate 1st, 2nd, and 3rd class levers along with fixed, movable and combination pulley systems. 178 K'NEX rods and connectors support 2-3 students working as a team. Comes packaged in a strong plastic storage case with dividers and lockable lid. KN78610 $57.95 K’NEX® Intro to Structures - Bridges Children learn while they create using this fun set. 207 pieces to build 13 different bridge models, one at a time. Build all 7 types of bridges: arch, beam, truss, cable-stayed, cantilever, bascule and suspension. All packed in a strong storage tray with movable dividers and snap-on transparent lid. Teacher's guide included. KN78640 $57.95 K’NEX® Intro to Simple Machines - Wheels, Axles and Inclined Planes | Kids use 221 pieces to build 7 real-world examples of how a wheel turns an axle, how an axle turns a wheel, plus 2 levels of inclined plane, and a screw and a wedge. Each set supports a team of 2-3 students. All packed in strong storage trays with movable dividers and snap-on transparent lid. Includes a teacher's guide. KN78620 $57.95 K’NEX® Intro to Simple Machines - Gears | Each set contains 198 pieces to build 7 different gear models, including 2 spur gears, 2 crown gears, and 2 chain and sprocket gear examples. Each set supports a team of 2-3 students. All packed in strong storage trays with movable dividers and snap- on transparent lids. Includes a teacher's guide. KN78630 $57.95 www.wintergreen.ca SCIENCE 270