Box-and-Whisker Plots in 6th Grade
Box-and-whisker plots are a brand new concept for my 6th-grade math students, and when 6th graders are first introduced to them, they seem a little scary. However, with some structured directions, students catch on very quickly.
Teaching Box-and-Whisker Plots
I break down the box-and-whisker plot into 5 steps, in order to plot the 5 points needed to create the box and whiskers:
1) Order the data set from least to greatest.
2) Identify the smallest and largest values; place those points on the number line (above the number line).
3) Identify the median and place that point on the number line.
4) Find the first and third quartiles and place those points on the number line.
This step can be tricky for students...I've found it to be the step that most often throws off their box.
The common mistake students make is to assume that since the two middle numbers (in this case 6 and 7) were used to find the median, they aren't part of the upper and lower halves. This throws off their 1st and 3rd quartiles. I've found it's important to spend extra time on the different scenarios possible in this step. I've also found that drawing that middle line to represent the median is a very helpful visual.
5) Draw the box and whiskers:
a) Draw a box, with the (vertical) end lines going through the points of the first and third quartiles.
b) Draw a vertical line through the median.
c) Draw lines from the box to the least and greatest values.
Box-and-Whisker Plot Fold-It-Up
I created this notes/fold-it-up a couple years ago, to help guide my students as they began creating box-and-whisker plots on their own.
I created two versions - a blank one for students and a completed one for me:-) Using the blank version, I walk the students through their creation of the box-and-whisker plot. And when we're done, they have the notes for their independent work.
The only folding part of this fold-it-up is the section at the very bottom that has the definitions of the vocabulary. Students will need to cut the vertical lines along the bottom, fold them up, and then write the vocabulary words on the outside of the flaps
When students miss the instruction due to absence, I give them a copy of the completed version on their return.
Box-and-Whisker Plot Math Wheel
I recently created a box-and-whisker math wheel - it has the same steps outlined above, just in a different format - a little more colorful and fun! Both of these resources are great for interactive notebooks!
What instructional strategies/activities for box-and-whisker plots are your favorites?
To Read Next:
Hey there! I'm Ellie - here to share math fun, best practices, and engaging, challenging, easy-prep activities ideas!