Addition: When you take two things and you count them as a whole group.
Add: Short name for addition.
Subtract: When you take some from a group to make two different groups.
Minus; Short name for subtractions.
Week: 26 Lesson ID:441
The Big Questions:
What is addition? What is subtraction?
None for this lesson.
Count to answer "how many?" questions about as many as 20 things arranged in a line, a rectangular array, or a circle, or as many as 10 things in a scattered configuration; given a number from 1-20, count out that many objects.
Technology Research Tools-Students will use technology resources (e.g. calculators, data collection probes, videos, educational software) for problem solving, self-directed learning, and extended learning activities.