Slide Rule "Educate" - Бројалка за деца
A perennial classic that has taught people the foundations of arithmetic for generations. This classic slide rule made of robust FSC® 100%-certified wood lets young math whizzes practice their maths and teaches them about numerical proportions. Brightly colored beads on ten rows can be moved back and forth. A great gift for all (aspiring) school children! Please note that this product previously had the product number 10849.