The LaMotte Earth Force Standard Water Monitoring Kit provides enough materials to test 100 water samples for each of nine water quality parameters, including dissolved oxygen, biochemical oxygen demand, pH, temperature change, nitrate, phosphate, turbidity, coliform bacteria, and benthic macroinvertebrates. Each test factor module includes step-by-step illustrated instruction cards, color charts, water quality flashcards, and safety information. Instructor’s Manual includes data sheets and guidelines for creating an effective local water quality monitoring program involving both schools and communities. Ideal for students from primary grades through college, as well as citizen monitoring groups.

Gain a new appreciation for forests and trees! Kit includes a Tree Finder illustrated manual to determine species, a tangent height gauge and 50m measuring tape to figure heights, and a diameter tape. Study annual growth rings by extracting a core sample with a professional model 8˝ increment borer (with 10 core holder cards). Students can also determine the volume of wood in a tree by using the tree scale stick. Also includes biodegradable roll flagging and stake wire flags to delineate research areas, six plastic handheld magnifiers, six packs of six tree cookies, six 12˝ rulers, and carrying case.

Easily Identify the Trees You Find, Even in Winter!

This essential guide by celebrated ecologist May Theilgaard Watts helps readers enjoy getting to know trees, even in winter when the leaves have fallen from the branches. With this handy, easy-to-use book, you’ll be able to identify the trees around you in no time.

Features include:

• Key to identifying deciduous trees (trees that lose their leaves in the winter) by looking at twigs, buds, fruits, and other features
• Explanations of the structure of twigs
• Information about habitats and ranges of native and some widely introduced trees
• Illustrations with the author’s line drawings

Identify native (and some widely introduced) trees of the United States and Canada, east of the Rocky Mountains. 

Features include:

• A dichotomous key, leading the user through a series of simple questions about the shape or appearance of different parts of a tree
• Includes 161 species
• Illustrated with line drawings
• Small (6- by 4-inch) format that fits in a pocket or pack to take along on a hike

Dig into 7 soil analysis experiments designed to expose scientific properties of loam, silt, clay, sand, and other types of soil!

In this newly revised and updated edition of his highly acclaimed field guide, renowned nature photographer and tracking expert Paul Rezendes brings the fields and forests to life with his unique observations on North American wildlife and their tracks and sign. Illustrated with hundreds of his original photographs, Tracking & the Art of Seeing provides complete information on the behavior and habitat of over 50 animal species and shows you how to identify animals by their tracks, tail patterns, droppings, dens, scratches and other signs.