by DaleCallahan | May 8, 2013 | Geometry, Geometry General Course Questions
Question from Derek: I am considering your Geometry program for our children. However I am not convinced yet that I could grade geometric proofs fairly, consistently and accurately. Since proofs have mutiple possible correct answers depending on how the student writes...
by DaleCallahan | May 8, 2013 | Geometry, Geometry Chapter 10
Question from Rene: Geometry – Chapter 10 Review #14 answer book says x=12.8, but we get x=5. What do you think? Answer from Dr. Callahan: Yes – a bit deceptive here. I think yours is reasonable. However, he is going by this. The long side of each...
by DaleCallahan | May 8, 2013 | Geometry, Geometry General Course Questions
In Harold Jacobs Geometry we skipped over material is chapters 12, 13, 15, and 16 because 1. It is not needed for ACT/SAT nor future math classes, and 2. it is a overly complex for the course at this level. Our recommendation is that the student look over this...
by DaleCallahan | May 8, 2013 | Geometry, Geometry Chapter 6
For 19 you can get a line of symmetry between each one that is hand to hand (wing to wing) and each one that is nose to nose. Those total 7. In other words, you can make a fold in many places if you take two at a time (or individuals which is what the problem asks)....
by DaleCallahan | Jun 8, 2012 | Geometry, Geometry Chapter 1
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