3 1 10 Construction Algebra Catherine Twomey Fosnot Primary Author Bill Jacob Primary Author mixed material 9780325028415 London Heinemann March 19, 2010 Young_Mathematicians_at_Work-_Construction_Algebra.jpg.jpg Constructing Fractions, Decimals, and Percents Catherine Twomey Fosnot Primary Author Maarten Dolk Primary Author mixed material 9780325003559 London Heinemann 2002 Young_Mathematicians_At_Work-_Constructing_Fractions%2C_Decimals%2C_and_Percents.jpeg.jpeg Constructing Number Sense, Addition, and Subtraction Catherine Twomey Fosnot Additional Author mixed material 032500353X Amerika Hanover 2001 Young_Mathematicians_At_Work-_Constructing_Number_Sense%2C_Addition%2C_and_Subtraction.jpeg.jpeg