Teaching expanded and standard form of numbers? You NEED this hands-on activity!
These cards assist those visual and tactile learners by allowing them to see and touch any number (up through 5 place values) and change it from standard form to expanded form!
How to use:
Standard form to Expanded form:
Show students a standard form of a number. To make it game like, you could also roll three dice to generate a three digit number.
Next, students build the standard form of the number with their set of place value cards.
To switch from standard form to expanded form, students will “expand” the cards, showing the value of each digit in the hundreds, tens, and ones.
NOTE: If you’re working with two digit numbers, then complete the activity using only the tens and ones cards. The activity can easily be adjusted for differentiation. I suggest, however, that you still include all cards in the bags, so that students can visually see the pattern and next place value in the set. This will assist them in discovering place value on their own!
Expanded form to Standard form:
Give students clues about a three digit number. (Ex: “ The value of the hundreds is 200, there are 3 tens, and there are no ones.”) Students build the number using the place value cards.
On your signal, students push the cards together (stacking the various place values on top of one another), creating a standard form of the number.
Check out my Powerful Place Value Board Game, Gr. 2 Edition!