Unit 6 is a unit on adding by teaching students to add double digits by using some different techniques (the math text calls it mental math)
for example: 34 + 20 =
step one add only the tens:
30 + 20 = 50 (correct now...:)
step two now add the ones
50 + 4 = 54
Eventually I will show student how to add using regrouping (carrying).
but mental math can help students get a very close estimate of the correct answer...
No comments:
Post a Comment