Enclosed you will find 30 decimal cards ranging in quantity from 0 - 5, and a 0-5 number line
You will need:
Tape or glue sticks
Have students work in pairs to assemble the number line and cut out the decimal cards. Once the decimal cards are cut out, students should take turns placing them in the appropriate spot on the number line with tape or glue. Encourage students to share their thinking with their partner; “4.897 is kind of close to 5, so I am going to place it more towards the 5 than the 4….”
You can use all 30 cards for more advanced students, but 15 cards works just fine too.
Once students have finished, have the class do a “gallery walk” around the room to see how everyone placed the numbers. Once the class reconvenes, ask students to share what they noticed. Ask:
What do you notice about the numbers on the left side of the number line? How do they change as you move to the right?
What strategies did you use to compare numbers that ended in different decimal places? (4.2 compared to 4.53)
Was this activity easy or difficult? What made it so?