Strategy
Tens frames, for quickly making 10.
Numberline, for bridging tens.
'Scooping' on tens trames, to encourage partitioning
Numeral cards, for commutativity
Using groupings within five
Internal number line for finding halfway
Knowledge
Making connections, for representations of decades
Using Māori to reinforce place value
Arrow cards for place value
General
Helping students know what they know
Encouraging self correction
Tens frames, for quickly making 10.
Numberline, for bridging tens.
'Scooping' on tens trames, to encourage partitioning
Numeral cards, for commutativity
Using groupings within five
Internal number line for finding halfway
Knowledge
Making connections, for representations of decades
Using Māori to reinforce place value
Arrow cards for place value
General
Helping students know what they know
Encouraging self correction