The National Science Foundation funded Calculators and Mathematics Project, Los Angeles (CAMP-LA) developed curriculum materials focused solely on the use of calculators. The project was developed in three stages. The first stage studied the mathematics curriculums from different states and identified topics that are not included but should be if every student had a calculator, topics treated in too much detail, and topics no longer appropriate. Based on this information, CAMP-LA compiled a prototype curriculum organized by grade level to be consistent with the "California Mathematic Framework" strands. The second stage developed lessons to cover the topics through the curriculum. The third stage field tested these lessons in various parts of the country. This book is composed of lessons for grades K-2 in the series. The introduction gives an overview of CAMP-LA, information on how to use the lesson plans, a section on calculator awareness, a discussion of assessment approaches, with sample assessment strategies appearing in each lesson plan, a preliminary lesson on how to keep a calculator journal, and a scope and sequence for the book. The remainder of the book is composed of 32 lessons in four sections: Calculator Awareness, Patterns and Functions, Number, and Algebra. Each lesson is broken down into three sections. The three sections are labeled: "Grade", including grade level, strand, skill required, and purpose; "Management", including class organization, time frame, materials needed, vocabulary, and prerequisite skills; and "Lesson" including suggestions for directed instruction, guided practice, independent practice, evaluation, and home activity. (MDH)