Every semester I teach on a chapter that introduces the use of one and ones. My son, age 2, gave me the idea one day to use his Megablocks in class. Megablocks are similar to Legos, but they are very big. They come in all different colors and shapes, which makes them perfect for this lesson.

Directions:

1. Buy or bring Megablocks (or something similar that can attach together).
2. Bring them to class.
3. Grab several different colors of Megablocks and tell the class what they are. “These are blocks. They are all the same type of item. This is a red block. A red ONE. These are blue ONES. How many do I have in this hand? What is this? A red ONE. How many do I have in this hand? What is this? Blue ONES.”
4. Attach one block of a one color to another one. “What is this?” This is usually where the students are puzzled, you may get several different answers. “This is a red and blue one.” This shows that they are together as one solid piece. They are still blocks. Next unattach these and ask “What are these?” They may repeat what you just told them. ” This is a red ONE AND blue ONE.”
5. Repeat as needed with step 4. I usually ask individual students then I move onto the activity.
6. Give each student several different blocks (size/color).
7. Model the activity. Teach the difference between “A block” “The blue one” by selecting a student asking them to hold up their blocks and (teacher) requests in front of the class for “a” block. Explain that “a” doesn’t care about the size/shape.
8. Have them walk around the room to perform the activity on slide 2 of the powerpoint.
9. Have the students sit back down and perform the next activity (slide 3) as pairs or groups of 3-4.
10. Conclude by have students write about the examples on Slide 4 (pictures of same type of items with various colors and/or sizes).

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Dglenn