Page 18 - Just for Middle School Life Science Mini Catalog

Flower Model KitA 3-D visual reference for teaching the entire life cycle of a flowering plant. Colorful teaching model is resilient non-toxic foam to withstand years of student hands-on use. Teacher’s guide includes complete background information, reproducible worksheets, cross-curriculum activities and assessment ideas. Topics include pollination, fertilization and structure and function of flower parts.FB1371 I $83.00Plant Pigment Chromatography—Student Laboratory KitProvide your students with an exciting method to study and compare plant pigments. Using thin-layer chromatography, students can separate and compare chloro-phylls and accessory pigments found in two different plants. This kit makes it easy to set up and perform this interesting experiment and get terrific results within a single class period. FB0586 I $67.95Flower ModelTeach the reproductive function of flowers, angiosperm pollination and fertilization with this vinyl plastic model. Petals, sepals and stamens are detachable. Sectioned anthers expose pollen grains. Dissected ovary reveals the female gametophyte. Six pollen grains adhere to a stigma and one pollen tube penetrates the micropyle to show pollination. A tube nucleus and sperm cells appear near the pollen tube apex just prior to soluble fertilization. FB0165 I $643.95Plant Symbiosis and Nitrogen Fixation KitThis kit illustrates the relationships between bacteria, nitrogen fixation, nitrogen cycling and plant nutrient requirements. Students will learn what farmers have known for some time—the role that bacteria play and how plants benefit. Students plant grass seeds, which they maintain on three different nutri-ent media and monitor relative growth over a 25-day study period. FB0388 I $85.95MIDDLE SCHOOL LIFE SCIENCEPLANTS, CONTINUEDPlant Tropisms— Student Laboratory KitWhy do roots grow down and stems grow up? Can plants be fooled into different growth patterns? In a series of experi-ments, students grow plants in unique ways, observe patterns of plant root and stem growth and answer questions about plant topisms. Corn and radishes are used as experimental organisms. Students see surprising results when both light and grav-ity are “pulling” on the plants. FB1560 I $61.20Permeability, Porosity and Soil Moisture—Student Laboratory KitMore than just dirt, soil is a complex mixture of inorganic minerals, organic matter, air and water. Soil’s particle size affects the presence of air and its ability to hold water. Students determine the permeability and porosity of soil by measuring the ease of air and water movement through soil and the volume of each the soil will hold.FB1882 I $61.20