More hands on geometry – lines and angles (K-3)

Yesterday we had our annual gumdrop platonic solid activity.

Today we used KNEX to model points, lines, rays, line segments, acute angles, right angle, and obtuse angles.

Part one of the work is to create the items on the cards.

knex pieces reprensenting point, line, line segment, ray, acute angle, obtuse angle, right angle

point, line, line segment, ray, acute angle, obtuse angle, right angle

Part two is to place the obtuse and acute angles where they “fit” in relation to the right angle.

obtuse, right, and acute angles, modeled with knex aligned according to size.

comparing the angles

These could be made with gumdrops and toothpicks as well, but I wanted a work task for our shelves that wouldn’t be eaten in a day. If you don’t have knex handy,  toothpicks and clay should work just as well.

structured geometry task in a red plastic tray

already on the shelf for independent work time

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