Who invented masyu?

NikoliMasyu (ましゅ, Mashu, IPA [maɕu͍]; translates as “evil influence”) is a type of logic puzzle designed and published by Nikoli. The purpose of its cr...

What a cross means?

cross, the principal symbol of the Christian religion, recalling the Crucifixion of Jesus Christ and the redeeming benefits of his Passion and death. The ...

What is math test?

The Math Test is a chance to show that you: Carry out procedures flexibly, accurately, efficiently, and strategically. Solve problems quickly by identifyi...

What is jigsaw grouping?

Jigsaw is a cooperative learning strategy that enables each student of a “home” group to specialize in one aspect of a topic (for example, one group studi...