Ep 180: Revisit With a Twist - An Important Subtraction Pitfall

How do you label fractions on an open number line? How do you label a fraction of a candy bar? How many cuts do you make to cut a candy bar into fourths? Pam and Kim invite you to revisit episode 138, this time with an ear towards fractions. Do your students ever get confused about counting obects vs counting distance? In this episode 138 Pam and Kim use a Problem String to help build intuition about everyday subtraction problems.Talking Points:Experience a Problem String to build relationshipsFencepost Problems are all over the placeStudents can't just pluck numbers out of Fencepost problemsCathy Fosnot's replacement unit, "Measuring For the Art Show"Other places these kind of problems show upKim explains her strategySee episode 111 for more about "Measuring for the Art Show"!Check out our social mediaTwitter: @PWHarrisInstagram: Pam Harris_mathFacebook: Pam Harris, author, mathematics educationLinkedin: Pam Harris Consulting LLC