Svante Arrhenius proposed that acids are compounds that dissolve in water and release hydrogen ions, while bases dissolve in water and release hydroxide ions. This Arrhenius definition of acids and bases explained why each group exhibits similar properties and why acids and bases neutralize each other when mixed, as the hydrogen and hydroxide ions combine to form water.
1) Analysis of student test results from DBE 2 and control schools found that over 75% of students met standards in language and science, but only about 35% met standards in math in both grade 3 and 6.
2) The percentage of students exceeding language standards dropped dramatically from 69.4% in grade 3 to 7.1% in grade 6, and the percentage below standards increased from 5.4% to 21.5%.
3) DBE 2 programming helped narrow the gender gap in math performance, with an 8% difference favoring girls in grade 6 in 2008/09, compared to a 21% difference favoring boys in 2006/07 before DBE 2.
4)
This document contains 18 pieces of life advice from the Dalai Lama, such as taking responsibility for your actions, learning from mistakes, spending time alone each day, and dealing with current disagreements rather than bringing up the past. It encourages forwarding the message to others for improved luck and life experiences, including wonderful surprises.
Svante Arrhenius proposed that acids are compounds that dissolve in water and release hydrogen ions, while bases dissolve in water and release hydroxide ions. This Arrhenius definition of acids and bases explained why each group exhibits similar properties and why acids and bases neutralize each other when mixed, as the hydrogen and hydroxide ions combine to form water.
1) Analysis of student test results from DBE 2 and control schools found that over 75% of students met standards in language and science, but only about 35% met standards in math in both grade 3 and 6.
2) The percentage of students exceeding language standards dropped dramatically from 69.4% in grade 3 to 7.1% in grade 6, and the percentage below standards increased from 5.4% to 21.5%.
3) DBE 2 programming helped narrow the gender gap in math performance, with an 8% difference favoring girls in grade 6 in 2008/09, compared to a 21% difference favoring boys in 2006/07 before DBE 2.
4)
This document contains 18 pieces of life advice from the Dalai Lama, such as taking responsibility for your actions, learning from mistakes, spending time alone each day, and dealing with current disagreements rather than bringing up the past. It encourages forwarding the message to others for improved luck and life experiences, including wonderful surprises.