Counting

Ag_math_counting

Develop, practice, and extend counting skills
Grades K-2

Introduction
Counting is the basis for learning how to do number operations.  As students learn to count they begin to comprehend the concepts of addition and subtraction, number sets, intervals, order, and other important number concepts.  Children learn counting by saying and writing numbers and associating their counting with groupings of objects.

Kindergarten children should be able to do counting activities to 20 and backwards from 10.  First graders should be able count by twos, fives, and tens to 100 with growing ease.  Second graders should be able to count to 999 by ones and to 100 by twos, fives, and tens, extending these patterned number groupings to counting by threes and fours through 96.

Preparation
Math Journals (as applicable)

Procedure
The teacher should demonstrate several ways to depict counting.

The students will use GollyGee Blocks to place a certain number of objects or shapes shapes into a 3D scene.

The students say the current number of the block when they are placed in the scene. The numbers should be done in order (e.g., upon putting the farm girl into the scene the student should say one farm girl and as each new object is introduced the student says two farm girls, three farm girls). Younger children need this reinforcement and focus.

Students should start with single digit numbers for kindergartners and first graders and numbers up to 100 for for second graders.

Repeat the procedure using other shapes or numbers.

Optionally, color and add texture choices to objects and shapes.

Evaluation
Teacher observation may be the optimum method for quick feedback of student understanding and progress while the students are at work and using counting skills  during the creation at their own computer station.

The teacher can evaluate student scene printouts for correctness and comprehension.

The teacher should employ questions to assess student comprehension about the number represented by their objects or shapes.  Further questions may be asked such as, "What is one less, three more?"

The teacher can create an evaluation sheet to test student understanding of numbers and counting sets.

Extensions
Students subtract objects from scenes and count backwards using the Undo function.

The class creates a book of numbers by associating an object with each number (e.g., one farm girl, two trucks, three cars).  Put the books on display in the library/media center!

Students practice using number words with the 3D Text tool to label creations.

Students write story problems in math journals to describe and correspond to the scenes created by this activity.

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