Errata: Rocks and Dirt
The missing words at the bottom of page 8 are: “the elements titanium and iron mixed into the Al2O3.)”
The answer key for 2.4 should read as follows:
2) gypsum 3) magnetite 8) malachite 9) feldspar 10) topaz 11) talc 15) pitchblende 17) fluorite 18) bauxite
19) apatite 20) pyrite 22) ulexite 23) sphalerite
1) diamond 2) galena 4) graphite 5) barite 6) beryl 7) hematite 12) cinnabar 13) calcite 14) corundum
16) halite 18) biotite 21) quartz
The download and the printed booklets were updated on Oct. 1, 2018.
Mapping the Body, module 4
I hope to have this module finished by the end of fall semester 2018. Life has taken unexpected twists and turns, and I was not able to finish this project as soon as I would have liked to. While the module is in process, it will be open and free of charge.
“Dissect Your Dinner” (food chemistry) is halfway done
I had really hope to have this available by fall 2018, but I am not sure I can get it done by then. If you are doing food chemistry and would like to try out the first three chapters, email me and let me know. The first three chapters are a very thorough treatment of the chemistry of water, salt, sugar, butter, wheat, gluten, milk and cheese. The curriculum is pitched at middle school level, but the info could easily be used with high school as well.
The Elements has been updated. The new, “fourth” edition is what you get when you order either here on my site, on Amazon, and at any place that retails my books. The new edition has much more information in chapters 6, 7 and 8, plus a new craft, a new skit, and some new activities.
Cells (0ld copies only– before 2016)
March 2012: In answer key for chapter 8, number 8 should say “centrosome” not “c.” In question 10, the word “cells” should be singular not plural. Downloads and hard copies purchased after April 1 will already reflect these changes.
November 2014: On page 57, I rewrote the first paragraph to make it clear that the oxygen atoms in the carbon dioxide that is discarded were already attached to the carbon atom when it was still on the pyruvate. So all the enzyme scissor had to do was make a snip. I redrew the picture as well, taking out the O2 molecule so the drawing reflects the words of the text accurately.