Group I was incorrectly coded as Alkali Earth Metals in the legend. It should read Alkali Metals (I can black out the word Earth with a permanent marker).
Other than that, the atomic weights are rounded to whole numbers, so no sig figs after the decimal point. I can't complain too much about this, but for most science classes with a math emphasis you may need a couple of values after the decimal point. It's a picky point, but it may not be an issue to many (no good for college chem if you're working with atomic weights and moles, empirical formulas, etc. as you'll likely need more precise atomic weight values). Probably not an issue for the little kiddies.
Using mine as a cat food mat (I'm so mean, I know) and getting the one by Ruskin:Periodic Table of Elements Placemat by M. Ruskin instead. It's supposed to have orbital info as well.
Thickly laminated, good quality physically.
Click Here For Most Helpful Customer Reviews >>
Very good quality! This placeman will less us for a while. Very sturdy, nice looking and easy to read. We love it!Best Deals for Periodic Table of Elements Placemat (Revised Jan. 2012)
This is very well made and colorful. Very durable and easy to clean. Easy to work with. I like this.Honest reviews on Periodic Table of Elements Placemat (Revised Jan. 2012)
I think the periodic table is meant to be understood not memorized--as some teachers require--so it is a good way to keep my grandchildren interested in science without hammering non-concepts.Good quality.
No comments:
Post a Comment