Selling lemonade to earn money for new books, Tad, Lily, Leap and friends use their counting, addition and subtraction skills every step of the way.
2013
2011
2009
2008
2016
1957
2014
1981
1997
1964
1983
2002
1944
1993
2007
1991
1951
1948
2017
2019
