Comet's Star Cards: Where the Digit Sits

Comet the giraffe astronomer deals a set of star cards with big numbers on them. Students sort the cards by digit count, order look-alike numbers, write numbers up to 999,999 in expanded form, turn number names into digits, and see why a digit one place to the left is worth ten times as much. A Greatest of Them All game, where each digit is placed as it's drawn, closes the lesson. Every direction is narrated, and each wrong answer gets a spoken hint. Built for Grade 4 place value (4.NBT.A.1, 4.NBT.A.2).

• 17 interactive scenes with narrated directions
• True or false, card sort and ordering
• Expanded form, number names and digit values
• Greatest of Them All digit game
• Spoken hints on every wrong answer

• Write numbers up to 999,999 in expanded form, and turn expanded form and number names back into digits.
• Find the value of a digit from its place.
• Tell when the same digit is worth ten times as much in one number as in another.