CCSS: 5.NBT.7, MP#2 – Reason Abstractly and Quantitatively

Instructional Format: Video, student problem-solving, group or individual work

Lesson Description: There are many ways to use this video in your math class. I filmed it with the express purpose of having students practice adding, subtracting, and multiplying decimals.

1) You can show this video (1:46) at the beginning of any unit You can have them work on the problem at the end of daily lessons (or once a week) armed with new knowledge that they are exploring in class. Students use the note-maker to help record their problem-solving work. Or you could revisit the video at the end of any unit as a formative check to see what the students have learned about working with decimals and whether they can apply that knowledge.

2) You could show this video as a warm-up activity after the students have learned some basic decimal operations. It is a great way to explore the real-life application of decimal distances.

Extensions: The extension can involve multiplication, but an advanced student can solve it any number of ways.

Cautionary notes/ misconceptions/additional connections: It may be helpful to have base ten blocks as well as blank number lines.

Help Wanted on Mont Vernon This book combines history and mathematics with adorable characters to teach kids about the many talents of the first U.S. President.

The UnderAchievers: Woven into a fun story, this book provides excellent math lessons for kids.