Designed for use with unit four of the science/math strand for second graders, the supplement and ditto packet contain visuals, worksheets, and instructional aids referred to in the teacher's guide corresponding to this unit. The brief introductions to kits 13-16 are written in both English and Spanish; all classroom materials for students are in Spanish only. The illustrations and materials for seatwork by students pertain to concepts in math such as measurement of volume or longitude, comparison of numbers as to greater or smaller, addition and subtraction combinations, parenthesis in addition combinations, operational symbols, counting to 100, and money values. In science, the materials are to help the teacher present learning activities about plants; animals; use of the five senses to observe, manipulate, and describe; changes in objects caused by environment; changes in man caused by age; and classification of living and nonliving things. The worksheets are to be presented under supervision rather than as independent tasks. (RS)