Instructional and assessment activities in unit three of a Spanish science/math curriculum for first graders are built around the central theme of the school. Kits 9-12, each designed for a two to three week teaching period, contain activities which also support who the child is, what his needs and wants are, what his resources are, and how he uses them. The guide lists the focus, objective, and materials for each learning activity in English and Spanish; teacher instructions are in Spanish. Major activities are as follows: reviewing geometric shapes; recognizing symmetry in two- and three-dimensional figures; introducing the concept of half; reviewing the order of cardinal and ordinal numbers; identifying time units (day, week, month, year); constructing a calendar; relating the concept of time to the school and home environment; identifying divisions of the day (minutes, hours); telling time; timing events; continuing mathematical concept of sets; identifying 100 as 10 tens and 0 ones; using a Celsius thermometer to record temperature changes; identifying weather symbols and conditions; introducing the cent symbol and the value of a cent, nickel, dime, and quarter, and using these values in adding and subtracting; strengthening the place value concept. Assessment activities are included with each kit. (RS)