directed number arithmetic sped up
the rules for combining directed numbers with addition and subtraction are probably too burdensome for memory so some awareness needs to be cultivated, over time some good graphics have been prepared by Shana McKay here and dropbox versions here many thanks to her once some facility with negative number additions and subtractions has been attained, it is desirable to move towards automating (i.e. no need to think too much) these skills this is an important step in the mathematics curriculum…
How to Teach the 12’s Multiplication Facts
You may not explicitly teach the 12 facts to your students, as many curriculums specify that students are fluent with facts to 10x10. However, solving 12's facts can be used to teach a very important
7 alimente care să nu lipsească din dieta unei femei - Totul despre slăbit
Pentru că este luna martie, m-am gândit să îți prezint o listă cu 7 alimente care ar trebui consumate zilnic de femei. Iar în articolul următor voi reveni cu lista alimentelor care ar trebui evitate de doamne. Da, unele alimente sunt mai bune decât altele când vine vorba de femei!