Learning Advantage 7593 Dry Erase Magnetic Straight Edge, 24"

These geometry teaching tools were super helpful this year, particularly the protractor. The triangles have smaller triangle cutouts that can be traced onto the whiteboard which is useful when you need a smaller triangle. The tools are a bit larger than I imagined; almost too large. The 4 I ordered take up most of an entire 3x4’ whiteboard when not in use. The quality on these is good. They are sturdy and I like the big handles. Regarding the magnets, mine give me no issues at all. The magnets are just right. However I received an extra ruler and triangle and gave them to a teacher friend down the hall. The ruler magnetizes to her whiteboard just fine, but the triangle slides off. The triangle I gave her is ever so slightly concave from sitting in my vehicle for several weeks, and that may be why. I give these 5 stars and definitely recommend them to all my teacher friends.

I needed to add more magnets to the back, otherwise it slid down the board, when I wasn’t holding it. It is an ok length. I should have ordered a 30” ruler, but it is light to hold and is made with good quality plastic.

Good magnet

I joke about the fact (and some students tease me) that I can't draw a straight line to save my life. I appreciate that this ruler is large enough for whiteboards, is magnetic, and has a handle. The handle keeps it stable and easy to relocate. I wish the magnets were a bit stronger, but that is my preference, not really a criticism.

It's fine for a straight edge, but the magnets are too weak to stay up on the whiteboard. Other magnets works just fine. For a 1 month shipping time, it wasn't worth the wait.