Pre-Kindergarten Lessons from Explorer

This list offers good places to begin looking for individual pre-K lesson plans or materials on which to base them. For more sites, see our page of pre-K lesson plan collections, or browse or search the Forum's Internet Mathematics Library.

Folding Shapes: Are the Sides the Same? - Janna Moore

Folding Shapes gives students practice in identifying typical shapes (circles, squares, triangles, etc.), in the process of teaching about lines of symmetry. Students find symmetry in alphabet cutouts by folding them in half in various ways. more>>

Introduction to Fractions for Primary Students - Varnelle Moore

A Web unit designed to introduce young children (K-2) to beginning concepts in fractions: equal parts, divide and shade, parts to whole, and writing fractions. Each lesson includes an interactive, manipulative-based project, technology, paper/pencil practice, and literature connections. Helpful links and teacher support extension ideas are also provided including alignment to NCTM Standards. more>>

Introduction to Geometry for Primary Students - Varnelle Moore

A Web unit designed to introduce young children (K-2) to beginning concepts in geometry: describing shapes, making patterns, building shapes, rotational symmetry, and line symmetry. Each lesson includes an interactive, manipulative-based project, technology, paper/pencil practice, and literature connections. Helpful links and teacher support extension ideas are also provided. more>>

Introduction to Measurement for Primary Students - Varnelle Moore

A Web unit designed designed to engage young children in a series of activities where they measure and describe the attributes of integer bars: building houses, short vs. tall, designing bridges, measuring using integer bars. Each lesson includes an interactive, manipulative-based project, technology, paper/pencil practice, and literature connections. Helpful links and teacher support extension ideas are also provided. more>>

Introduction to Symmetry for Primary Students - Varnelle Moore

A unit designed to give young children (K-2) an introduction to symmetry, with lessons on describing tangrams, slides, turns, and flips. Each lesson includes: an interactive, manipulative-based project; an activity incorporating technology; pencil and paper practice; and literature connections. Helpful links and teacher support extension ideas are also provided. more>>

Pascal's Triangle - Math Forum/USI

A Web unit designed to support workshops given by the Math Forum for the Urban Systemic Initiative (Philadelphia and San Diego). Read about the history of Pascal's triangle and learn to construct it; view illustrations of number patterns to be discovered; carry out interactive investigations in JavaScript or the Geometer's Sketchpad, and explore this famous triangle through lesson plans that feature questions, answers, discussion, and student worksheets. more>>

Place Value: K-3 - Andra McLeod

A "box full" of place value manipulatives for the classroom, with descripion, lesson ideas, and objectives listed for each of five types of manipulative. more>>

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