Grade 2: EDC Computations & Connections – End of October

Instructor Notes:

For materials preparations, click ‘Back to Main Menu’ button and select ‘Getting Started – EDC Setup’.

Read Every Day Counts Teacher’s Guide, Kanter and Gillespie, Great Source, 2005 or 2012 edition, p. 36.

The month’s completed Double Ten Grid cards can be used to strengthen children’s understanding of the inverse relationship between addition and subtraction.

See page 22, Helpful Hint, for playing “How many are hiding?” Children guess how many dots are hidden from view when shown the dots on one ten grid only and told the total dots on both ten grids.

When we ask for volunteers to share how they are figuring out the missing number, many will say they used an addition fact they knew to help them. Those who don’t yet know their addition facts will usually find it easiest to count up to find the missing amount. This will lead them eventually to naming the missing addend quickly without having to count. Keep the Sept. and Oct. dot cards to use throughout the year to revisit and practice fact families.