Lesson
2 – Adding With Base Ten Blocks
To encourage students to have fun on the Web while learning about Adding
With Base Ten Blocks, here are some games and interactive activities they
can do on their own or in pairs.
Goal
Add 2-digit and 3-digit numbers using concrete materials.
Builds Upon
Student Book pages 150-151
Instructions for Use
Bongo
Blocks prompts students to model 2-digit and 3-digit numbers.
To use Bongo Blocks, click on the one, tens, or hundreds buttons to the
left of the screen to make an equation appear. Have students drag and
drop blocks to make an equation true.
Base
Block Addition lets students practice addition with and without regrouping.
To use Base Block Addition, drag a
base block into a column to the left. If your child moves a block one
column to the right, it breaks apart to show the exchange, for example,
a 10-long for ten units. To group pieces to exchange the other direction,
click and hold the mouse key down while dragging a rectangle to "lasso"
the pieces. The newly grouped object can then be dragged into the next
column.
To complete a preset addition problem, select base 10 and click on the
‘Next Problem’ button. Group any pieces and drag them into
the next column. Start with the 1s column and work to the 1000s column.
The addition solution will appear on the left.
To add the blocks together to create your own problem, click on the ‘Create
Problem’ button and then use the blue buttons at the top to enter
blocks above and below the dashed line. As long as there are two numbers
correctly represented in the specified base, the addition problem will
appear on the left. To solve it, click on the ‘Begin Problem’
button and then on any of the blocks in the workspace.
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