A compact, single-page soccer-themed math worksheet featuring 5 addition and subtraction word problems within 20, using Part-Part-Whole mats, scouting terms word bank, and field guide number line.

Instructional slides for the Operation Investigators lesson. It introduces the detective toolkit (drawing evidence, part-part-whole models) and provides operation clues and a practice case for whole-group instruction.

A teacher's answer key for the Operation Investigators worksheet, featuring completed part-part-whole models, correct operations, and final equations for 5 practice cases.

A detective-themed worksheet where students solve one-step word problems within 20. It includes dedicated drawing space and part-part-whole graphic organizers to support conceptual understanding. Now includes 5 practice cases.

A clear single-page answer key for the Family Ties Worksheet, providing all correct addition and subtraction equations for the eight fact family problems. Features highlighted answers for quick teacher reference.

A comprehensive teacher's guide for implementing fact family instruction. Includes learning objectives, key questioning strategies, a paced instructional plan, and common misconceptions for teaching inverse operations within 20.

A single-page student worksheet featuring eight fact family triangles and partially filled equations for practice with inverse operations within 20. Includes a compact example and a bonus challenge at the bottom.

A condensed 2-page printable worksheet for a first-grade end-of-year math review. This summer-themed document contains 20 problems covering operations, place value, time, measurement, and geometry in a space-efficient layout suitable for printing.