Cracking the Number Code: Place Value and Patterns

Section role: supports the 'Cracking the Number Code' section while the teacher guides the class through synthesizing their discoveries from the number mix-up activity and introduces formal number writing rules. Slides: (1) Title — 'Cracking the Number Code'; (2) The 100-Chart — bullets: visual grid, highlighting rows and columns, noticing patterns in counting; (3) Skip Counting by Tens — bullets: 10, 20, 30, up to 100, seeing tens as shortcuts; (4) What is Expanded Form? — bullets: stretching out a number, example of 85 becoming 80 + 5; (5) The -Teen vs. -Ty Trap — bullets: comparing 14 and 40, spotting the suffix difference; (6) Three Ways to Write a Number — bullets: standard form (76), expanded form (70 + 6), and word form (seventy-six); (7) Video Prompt — bullets: countdown and pronunciation practice up to 100. Closing slide: 'How can we write your age in standard, expanded, and word form?' — hands control back to the teacher to set up the individual mastery quest.

Lara from Teachy