P – EC – WP12
Students were asked to estimate how many cars drove by the school during lunch. Marsha said her estimate was 20. She used 5 as a referent, and skip counted by five 4 times. Sammy said that five cars went by during the first 5 minutes of lunch and there were 20 minutes...P – EC – OE14
What could you be estimating if your referent is 10?P – EC – WP13
Two children were looking at stars in the sky. To estimate the number of stars in the sky, one child said she would use a referent of 5 while the other child said she would use a referent of 50. Which referent would be more suitable for estimating stars in the sky?...P – EC – WP14
Two children were looking at the number of school buses in the parking lot. To estimate the number of school buses in the parking lot, one child said she would use a referent of 10 while the other child said she would use a referent of 100. Which referent would be...Page 15 of 27