Yup Parents....Thats how they are teaching the kids these days. Its new method. I can see where it would make fractions and cross multiplication easier when time to cross that bridge.
Interesting show - how calculate the value of the sine, cosine, tangent and cotangent of the angle 0◦, 30◦, 45◦, 60◦, 90◦. The fingers are numbered seq... - Matematyka - Matematyczny Świat wokół nas. - Google+