Fall Progress Monitoring and Instructional Strategies for 5.NBT.1 & 2
Student doesn't understand that numbers get 10x bigger/smaller - emphasis on decimal place value.
Scroll to the table of contents (page 2) and click on the activity named Patterns-R-Us (page 26)
Look for activity: Place Value Concentration (under 5.NBT.A.1)
Making Number Talks Matter by Cathy Humphreys and Ruth Parker: Chapter 10: Number Talks for Operating with Decimals pages 368-372; 387-388
Illustrative Mathematics - Tasks for 5.NBT.A.4