New Lesson Materials - triangles and parallelograms, oh my!

We're still cranking away in the ExploreLearning Lesson Material factory! Today, we have released 3 new sets of Lesson Materials on the site. This batch explores more geometry topics:

Classifying Triangles

Special Parallelograms

Parallelogram Conditions

What defines an isosceles triangle? What conditions guarantee that a quadrilateral is a parallelogram, or that a parallelogram is a rhombus... or rectangle... or square? These Gizmos - along with the new Lesson Materials - are designed to help kids explore questions like that, in an interactive way.

As always, our updated Lesson Materials have 4 documents (Student Exploration Sheet, Answer Key, Teacher Guide, and Vocabulary Sheet), each available as a .doc or .pdf. (You'll need to be logged in to see all four documents.)

One quick note about the Student Exploration Sheet (SE) - the SE may be longer than most student "worksheets" that you're accustomed to. We do NOT expect teachers to assign the whole SE! (At least, not all at once.) The lesson that we generally recommend is this: page 1 of the SE (Prior Knowledge Questions + Gizmo Warm-up) plus ONE of the activities in the SE. That would total 2-3 pages. (Of course, feel free to revise our SE in any way you'd like - that's why we publish them in .doc form.)

In general, we write multiple activities within one SE to make it easier for teachers to differentiate instruction. In other words, more activities = more options.

Overall, this bring us up to 51 high-school- and middle-school-level math Gizmos with updated Lesson Materials, with plenty more to come.

If you'd like to try these Gizmos, or any of the others in our library, you can sign up for a free trial today!