News & Resources
Algebra 1 Test 4 #13
Question from Valerie: Algebra I; Test 4; Problem 13. I have the answer, but can you explain how you got the answer and give the pages in the textbook that talk about this problem? Thank you! Answer from Dr. Callahan: The question is asking is the equation is true. It...
Entrepreneurship Courses for High School?
Question from Penny: While looking at your homeschool math curriculum, I noticed your entrepreneurship course and Resumes are Worthless materials. Would these courses be appropriate for a high school student (for instance, part of a personal finance/entrepreneurship...
Grading Geometry Proofs
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...
Algebra 1 Multiple Productions of DVDs?
Question from Chelle: About the Algebra DVD's.... Has there been multiple productions? I'm thinking about purchasing from a friend and wanted to make sure I got the most current edition. Thanks! Answer from Dr. Callahan: Only one production, so you should be fine. The...
Algebra 1 Ch11.2 #5
Question from Chris: Algebra 1 chapter 11 lesson 2 problem 5h: I see that you can cross out the (x + 7) in the numerator & denominator to get 3 /(x +3). Why can't you simplify further by cancelling 3/3 so that the final answer is 1/x? Thanks Answer from Dr....
Geometry Ch10.R #14
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 is X and 8...
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