Would You Rather Math – ASKING STUDENTS TO CHOOSE A PATH AND JUSTIFY IT WITH MATH. Desmos | A Better Calculator. Math. iTools - Welcome to iTools | The site of online tools and applications. Tools. Mathematics 4.0 in the classroom. Mathispower4u. Calkoo.com - Free Online Calculators. Activities. The Ruler Game - Learn To Read A Ruler. Web 2.0 scientific calculator.