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Thinking Blocks provides interactive templates in which students use brightly colored blocks to model and solve problems. As students work through the problems they are provided with feedback as to whether or not they are using the correct sequence to solve each problem. There are templates and problems for addition, multiplication, fractions, and ratios. You can also develop your own problems using the modeling tool.

We provide teachers and students with mathematics relevant to our world today …

One of the difficulties in teaching order of  operations to students is that one of the most often used shortcuts actually causes student confusion.  Most students know that they should use PEMDAS when deciding what math operation to do first.  The problem with PEMDAS is that often students think that multiplication has to come before division and addition before subtraction. Instead, teach students to think of the operations as "levels." Just like on an elevator, you have to do one level before you can get to the next.  Be sure to start at the bottom - just like the first floor of a building. 

 The site includes really well done lessons, activities, practice pages (online), study aids, glossary, and word problems.  Algebra Lab is like a free, living textbook.

Tips: If you have a one-to-one setting, students can practice directly on the website for immediate feedback.  Very helpful!