Comet's Times-Ten Telescope

Join Comet the giraffe astronomer on the rooftop observatory to see how a digit's value grows ten times with each place to the left. Students warm up with a mental-math number talk, find the value of a digit in six-digit numbers, multiply and divide by 10 on a place-value chart and watch every digit move one place, count stacks of play money, and pick the multiplication and division equations that show one value is ten times another. Every direction is read aloud, wrong answers get a short hint, and the lesson ends with a two-question check. Built for 4th grade (4.NBT.A.1).

• 15 interactive scenes
• Read-aloud directions on every scene
• Place-value chart with ×10 and ÷10
• Hints for wrong answers
• 2-question check at the end

• Find the value of a digit in numbers up to 999,999.
• Multiply and divide a number by 10 on a place-value chart and see every digit move one place.
• Pick multiplication and division equations that show one value is ten times another.