Number Rules: Odd/Even, Comparison, and Skip Counting

Section role: This presentation supports the 'Rules of the Number Kingdom' section as the teacher formalizes concepts previously explored. The teacher uses these slides to define key terms and illustrate rules directly after students have attempted to solve the 'Mystery of the Locked Vault' challenge. Slide outline: (1) Title — 'The Rules of the Number Kingdom'; (2) Odd and Even Numbers — bullets: 'Ending Digit Rule,' visual examples of paired (even) and unpaired (odd) objects; (3) Even Numbers — bullets: definition as numbers ending in 0, 2, 4, 6, 8, visual: a set of 8 items split into pairs; (4) Odd Numbers — bullets: definition as numbers ending in 1, 3, 5, 7, 9, visual: a set of 9 items with one left over; (5) Comparing Numbers — bullets: introduce the symbols '<', '>', '=', visual: alligator mouth analogy; (6) The Place Value Rule — bullets: always compare hundreds first, then tens, then ones, visual: comparing 235 and 253 with base-ten blocks; (7) Skip Counting — bullets: definition as adding the same interval repeatedly, visual: number line showing jumps; (8) Skip Counting Examples — bullets: counting by 5s (5, 10, 15), counting by 10s (40, 50, 60), counting by 100s (300, 400, 500), visual: three distinct number lines with jumps. Concrete examples, figures, and vocabulary to surface include: even numbers, odd numbers, less than (<), greater than (>), equal to (=), place value (hundreds, tens, ones), and skip counting intervals. This presentation builds on the informal understanding students gained in Section 2 during the 'Mystery of the Locked Vault' challenge, particularly their methods for sorting odd/even cards and arranging numbers, and it prepares them for the individual 'Mastery Worksheet' in Section 4. Closing slide: 'How do these rules help us solve number puzzles?' — prompts students to connect the formal rules to their recent challenge experience.