Sets (Union & Intersection)
- Continued experience with Venn diagrams and set notation
- Emphasis on union and intersection of sets
- For elementary school children
- Wide cardstock strips; no cutouts
- Organize as eight two-way matching exercises
Note: Sets (Union & Intersection), the second of three sets series, is considered support material and is not automatically included in classroom sets.
Matching exercise that is continuation of Set Introduction with emphasis on joining and intersecting sets. Concepts: Union and intersection concepts, Venn diagrams, union and intersection set notation.
The teacher's experience and the sequence of skills in the students' basic math program are the best guides in determining which skills should be introduced first. In general, the scope and sequence chart above can be used as a guide.
A number of sets for younger children are "color coded." Some teachers present all the levels with an exercise set, while others prefer to present all the blue (two-digit) exercises, progress to the pink (three-digit), and culminate with the green (four-digit).
Other skills such as Roman Numerals require no prerequisites other rhan an understanding of place value. Such exercises can be presented any time.
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