Catrina counting tiles, writing numerals, and telling value of digits.
Supporting Notes on development of number sense, place value, unitizing and more ...
Focus questions:
- Notice how confident Catrina is in her thinking.
- How does she conceptualize numbers?
- Do you think she construct and deconstruct numbers using hierarcial inclusion?
- What does she know about number value?
- What does she know about unitizing?
- Was she doing so concretly or abstractly or both?
- What is it that would cause someone to believe she understands place value?
- What is it that would cause someone to believe she doesn't understand place value?
- What is it that you would be confident that Cena understands and doesn't?
Base 10 number system summary sheet:
Place value - counting tiles & noting then & ones
Video 1 Catrina counts tiles & groups by two tens and five left, write 25 ... (0:57)
Video 2 Catrina writes 16 & tells what 6 and 1 means ... 7? (1:40)
Video 3 Catrina shows what 16 & 5 is 21 ... groups ten ... 1 & 1 tile ... (0:35)
Supporting Notes on development of number sense, place value, unitizing and more ...