- NEW Grades 1-2 Fraction Bars Teacher's Guide contains complete information for teaching readiness for fractions at these grade levels. In FULL COLOR! The first six of the nine Grade-1 lessons use only whole numbers and colors to describe fraction concepts. The Grade-2 lessons continue the Grade 1 lessons and contain the following topics: basic concept of fractions, equality and inequality of fractions, measuring with bars and number lines. Not Common Core.