Khan Academy
Khan Academy: Count Tens
Practice counting by tens. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Illustrative Mathematics
Illustrative Mathematics: Choral Counting Ii
Using a 100 chart, learners will chant the counting sequence starting with one to one hundred. Variations can include skip counting, counting from various numbers other than one, and counting backward.
Better Lesson
Better Lesson: Crossing Over 100
Second graders often become confused as they count from one decade to the next. In order to become fluent with operations in addition and subtraction, 2nd graders need to be able to move across decades. This lesson plan includes a...
Illustrative Mathematics
Illustrative Mathematics: Choral Counting
This can be a daily activity to reinforce learning number sequences. The teacher will need a 100 chart or large number line and a pointer. As a whole group, have young scholars chant the counting sequence starting with one to thirty,...
Math Is Fun
Math Is Fun: Colorable Number Chart
Use this chart to explore counting and number patterns up to 100. Choose from thirty different colors for your paintbrush as well as five different versions of the hundreds chart, or start with a blank chart. There is also an auto color...