Number Mosaics: Patterns in Numbers

Help Marlo the chameleon mosaic artist fill in number patterns like "keep adding 9" and "keep adding 99". In 11 short scenes, students complete pattern tables, notice what each digit does as the numbers grow (and why adding 9 is adding 10 and taking away 1), find numbers far along a pattern like the 25th, and decide whether a number can be in a pattern by checking odd and even. Every question is read aloud, and wrong answers get a spoken hint and another try. Grade 4 (4.OA.C.5).

• 11 interactive scenes with read-aloud narration
• Pattern tables with typed answers and a Check button
• Spoken hints and a second try on every question
• A cool-down with a new rule

• Fill in a table for a number pattern that follows a rule like "keep adding 9".
• Notice what each digit does as the pattern grows, and explain why with place value.
• Find a number far along a pattern, like the 25th, without listing every one.
• Decide whether a number can be in a pattern by checking whether it is odd or even.