RightStart Geometry

The continuing saga of our adventures using RightStart Geometry and RightStart B. I have an 11yo and a 7yo who have average math ability.The 11yo has done Miquon, Singapore, RightStart Transitions, Level D and Level E; RightStart has saved her from a life a math phobia.

On Tuesdays I upload an update of what we did in math for the week.

RightStart Geometry:

Leson 80 Pizza Problems

The lesson looks at unit costs. It also looks at ordering pizza based on cost per square inch. Of course, this is a silly way to order pizza, since no one eats it by the inch. Better to figure the price per slice, taking into account the relative thickness of the crust and how generous the restaurant is with the toppings. But I suppose it makes for a fun worksheet.

Lesson 81 Revisiting Tangrams

We love tangrams, and have 2 sets of plastic ones. These problems are simple, yet tedious in that the student needs to draw the various parts of the tangram set. It is much easier to work through the lesson with plastic tangrams, by the way, instead of copying of the shapes onto cardstock and then trying to manipulate the cardstock tangrams.

The second worksheet shows shapes, then asks for several ways to form each shape. The answers on the answer sheet are not exhaustive by any means. I notice Kid1 struggling to come up with a final solution for the pentagon. I pause while passing by and say, “Why don’t you try this?” While she protests, “Mommy, that’s not going to work!” I come up with 2 more solutions (MrV has told me if I ever need to re-enter the workforce I should consider package engineering).

At the end of the worksheet, the student is asked which shapes cover the greatest area. The answer is based on the tangram shapes used to make the various shapes shown. Fun lesson!

Lesson 82 Aligning Objects

Working again with the shapes of the tangrams, this time learning to align right, align left, align top, and align bottom. It’s an easy concept, but all the drawing is very tedious. I suggest to Kid1 she split it up over a couple of days, since it takes over an hour.