How Do I Do It?
This is a fun hands-on data and measurement activity for all ages! Cross out (X) as many squares in 1 minute as you can with your right hand then try for a minute with your left hand! Give younger children bigger graph paper and less time. Once you have the data, students or the whole class can record and analyze it in simple bar graphs or with ratios graphed on a coordinate plane. For example, K-3 students can total their X's for left and right and create a 2 class bar graphs (one for the left hand and one for the right) with totals. They can then compare the graphs and talk about their ideas for the differences.
Variations & Extensions
Older students can figure out their "handedness" ratio by dividing the X's from the right hand with the X's for the left. For example, Marta crossed out 102 X's with her right hand and 66 with her left. 102/66 =1.5 The larger the ratio is above 1, the more right handed someone is. The smaller the ratio below 1, the more left handed the person is. Students can have deep mathematical conversations about this engaging and interesting activity.
Common Core Mathematical Practice Standards 2&4
Reason abstractly and quantitatively.
Model with mathematics.
Everyday ELL is now Every Language Learner.