I have used her materials for 13 years and have been to three of her workshops. If you ever get a chance to go, definitely take advantage! My kids absolutely love all of her materials! I used to teach a 90-minute block of math and science, and the kids would BEG me to do math for the entire 90 minutes so they could do Marcy Cook math. Her web site is www.marcycookmath.com
where you can look at samples of all her materials.