This classic book will excite students' imaginations while enriching skills in logical thinking. Logic Countdown problems are easy to incorporate into lesson pl

This classic series will excite students' imaginations while enriching skills in logical thinking. Orbiting With Logic problems are easy to incorporate into les

This classic series will excite students' imaginations while enriching skills in logical thinking. Logic Countdown problems are easy to incorporate into lesson

This safari will send students on an expedition that will result in hours of good thinking and unbridled enthusiasm. As enthusiasm soars, so do the levels of th

When a Serbian-backed assassin gunned down Archduke Franz Ferdinand in late June 1914, the world seemed unmoved. Even Ferdinand's own uncle, Franz Josef I, was