Jan Gebert is an Illuminations lesson plan reviewer and instructor of professional and secondary education at East Stroudsburg University. So she definitely knows a thing or two about quality lessons. Illuminations asked her for her favorite out of our 600+ lessons.

Diana Flores, who has a self-contained classroom, teaches highly and profoundly gifted students in Phoenix, AZ. Flores says math "rotations" is a "big-kid way to say centers." One of these math stations hosts computers, which students use frequently to visit Calculation Nation^TM .

The 23-year teacher modifies games to meet the different learning needs in her classroom. See how she modified Deep Sea Duel.

Anthony incorporates Illuminations lessons into her curriculum, but she also expands, tweaks and creates new materials to ensure these lessons are meeting the needs of her students.

Francisco Santiago works as a youth counselor for York County in Pennsylvania. Committed to helping residents prepare for successful futures, he came to Illuminations seeking out resources for motivation and remediation of mathematics.

Wendy Cleaves is a Mathematics Coordinator at the Regional Science Resource Center at UMass Medical School in Shrewsbury, MA. At the center, Cleaves supports pre-K-12 STEM educators by providing a professional development institute entitled, "Increasing Accessibility to Algebra & Geometry for ALL Students."

Much like athletes must warm up their muscles before heading into a game, students often warm up with engaging classroom activities or problems of the day before diving into the daily math lesson. Wan Chow of Bishop Strachtan School in Toronto finds the perfect warm-up in Illuminations.

Pamela Olmstead has been a middle school math and science teacher for 15 years at Chehalis Middle School (Chehalis, WA). One lesson that she has referred to all year long is Balancing Shapes, which uses the online applet Pan Balance—Shapes.

Chelsea Cutting from Mount Gambier, South Australia, tells us about the real-world connections her students are able to make after using Illumination resources.

Imagine having your whole year planned out before stepping foot in your classroom. Cindy Stofferahn, third grade teacher at Sturgis Elementary School in South Dakota, already knows what she is teaching today, tomorrow and for the rest of the year.

Matthew Jaques, ninth and tenth grade teacher for Cathedral High School in Springfield, Massachusetts, discovered Illuminations by way of Bright Ideas and has been using, modifying and creating his own lessons ever since.

Losing weight is a popular New Year’s resolution. Some people turn to exercise to help them achieve this goal, but one teacher wonders if it’s possible to keep this resolution while following a diet of fast food.

Teachers are not the only ones who encourage students to play Calculation Nation--parents do too! Dana Slevin, and her middle school daughters play Calculation Nation at home.

Jessica Woolard, a graduate of the Ontario Institute for Studies in Education of the University of Torontoher, spent part of her summer interning for NCTM before she returned to Canada to complete her degree in education.  During that time, she helped to create and edit lessons for Illuminations.

Carol Fears teaches sixth-grade math at Landstuhl Elementary/Middle School on a U.S. Army post in Germany. Throughout her 27 years of teaching, Illuminations has become her go-to resource for teaching new topics or looking for new ideas.

It has often been said that love happens when you least expect it, and now the same can be said for finding math resources. Victoria Miles, 7th grade math teacher at Abigail Adams Middle School, came upon Illuminations after a Google search directed her to the site.

Marie Zweirs is a single-parent of two daughters, Kylie (7) and Layla (2), living in San Antonio, where Kylie just graduated from kindergarten. Marie believes that parents play an integral role in the education of their children, sharing the responsibility with teachers, to ensure that learning occurs at home just as it does in the classroom.

Terry Johanson, learning support facilitator for Prairie Spirit School Division, and Kirsten Dyck, physics teacher at Saskatchewan High School, worked together to team plan and teach an Illuminations lesson.

Some doctors use body-mass index (BMI) as a health risk indicator. According to The Old Farmer's Almanac 2000, BMI can be found using the formula: BMI = [(W×705)÷H]/H, where H is height in inches and W is weight is pounds. An index greater than 27 or less than 19 indicates an increased risk for health problems. Helix is 5 feet, 2 inches tall and weighs 110 pounds. Is his health at risk?