"Prepares students' minds for logic." -Nathaniel, Muscatine, IA

"Students who are still acquiring English face a lack of background knowledge in English and the skills necessary to process the new information. Building Thinking Skills® has helped me meet both these challenges, and I have test scores and happy faces to back this up." -Britta, ESL Department, Tucson, AZ

"Well-sequenced concepts are introduced at low levels and build to appropriate higher levels.…One of the outstanding differentiating features of the materials is its heavy emphasis on student verbalizations." -Arithmetic Teacher

"Building Thinking Skills® Primary is an essential foundational tool in helping children develop thinking abilities and recognize key relationships both verbally and spatially." -Paul Cates, Ph.D.

"The ability to think clearly and to reason are equally as important as the ability to read or to write....[W]e have found the Building Thinking Skills® books to be the best of the various critical thinking products available." -Ellen, Crossville, TN

"The #1 selling thinking skills program in the world and I can see why! These authors have written one of the most effective books for teaching/learning thinking skills." -Merrilee Defoe, Reviewer

"Probably the best purchase I made this year. My kids loved it and got a lot out of it. Helps raise test scores!" -Parent, via the Internet

"I have twins who have always done above-average work but have never tested anywhere near the top. We did an intensive study of Building Thinking Skills® in the weeks before they tested. To my surprise, their scores were in the 98th and 99th percentile across the board. I failed to give them practice the next time around and their scores went down. Now they're back at the top again and I know that Building Thinking Skills was what helped them." -Sharon, Forestville, MD

"Building Thinking Skills® Primary was wonderful for helping my son with spatial/attribute thinking." -Ruth, via the Internet