United Scientific Supplies, Inc

Chemistry of Invisible Inks STEM Kit

Introduces students to the fascinating chemistry and physics behind invisible inks. Students investigate how organic fluids and chemical reagents can be used as invisible inks.

Includes:

• Materials for three detailed activities (with model and inquiry investigational paths - a total of four investigational activities), which can accommodate up to 40 students
• DVD with PDF teacher and student guides
• Structured, guided and open investigations at introductory, intermediate and advanced levels

pH, Indicators and Dyes STEM Kit

Introduces students to the chemistry behind plant pigments (the blueberry biopigment cyanidan) and their use as pH indicators and fabric dyes.

Includes:

• Materials for three detailed activities (with model and inquiry investigational paths - a total of four investigational activities), which can accommodate up to 40 students
• DVD with PDF teacher and student guides
• Structured, guided and open investigations at introductory, intermediate and advanced levels

Ink Chromatography and Forensics STEM Kit

Introduces students to ink chromatography and its application in solving forensics cases. Students gain experience in creating ink databases, identifying "ink tags" to "date" various inks and then use them (as professional document examiners do) in solving two mysteries involving document inks - an apparent suicide note and a forgery case.

Includes:

• Materials for three detailed activities (with model and inquiry investigational paths - a total of four investigational activities), which can accommodate up to 40 students
• DVD with PDF teacher and student guides
• Structured, guided and open investigations at introductory, intermediate and advanced levels

Meiosis Manipulatives Kit

Makes the complex biological process of meiosis come alive in your classroom. Includes instructional CD and teacher manual with recommended student activity, assessment options and student activity sheets.

Features:

• Teacher demonstration models with 30 large chromosomes arranged in five colorful sets
• Each set consists of a maternal and paternal homolog and four sister chromatids
• Alleles and parental lineage are clearly identified

Mitosis Manipulatives Kit

Instructive and reusable. Manipulatives make it easier to teach an abstract concept like mitosis in a science classroom.

Includes:

• Manual and a CD-ROM with helpful ideas
• 60 Large-sized plastic teacher demonstration models
• Over 100 smaller student manipulatives, sufficient for 30 students working in groups of five Magnets are included for teacher manipulatives   

DNA Manipulatives Kit

The teacher-developed DNA manipulatives kit is perfect for helping students to understand recombinant DNA technology. Includes magnetic teacher manipulatives designed to be used on the chalk board.

Includes:

• Instructional CD-ROM
• Experiments using laminated teacher and student gel electrophoresis boards
• Manipulative plasmids include information on the number of base pairs and lessons about restriction enzymes

Protein Synthesis Manipulatives Kit

Teach protein synthesis with hands-on manipulatives. Large, colorful models of DNA, mRNA, ribosome, tRNA and amino acid attach to the blackboard for a visual simulation of protein synthesis.

Features:

• Smaller size models provide students with hands-on learning Activities include identifying the amino acid sequence resulting from a unique DNA sequence
• Includes an instructional CD-ROM with suggested activities

Solar Powered Car

An economical and attractive demonstration car model.

Features:

• Powered by a solar cell or a rechargeable battery (AA size, not included. Alkaline batteries are not suitable). Battery can be recharged from the solar cell, demonstrating an electricity storage system for solar power
• Solar cell can be tilted to maximize the solar input
• Solar cell output can be measured at two binding posts
• Slide switch turns on/off and selects function
• All working parts visible through clear molded housing

The SpillNot

An inexpensive demonstration to intrigue students and challenge their analytical powers. The cup holder won’t spill when carried through a busy café or down a flight of stairs! You can even spin the cord around in a circle without losing a drop — but don’t jerk it!

The design of the SpillNot uses the principles of Newtonian physics to keep the liquid in the container. The flexible handle and the location of the suspension point above the center of the tray to ensure that the forces on the liquid are always directed toward the supporting tray, even when the tray is in motion. The sideways forces that are usually responsible for spills are not transmitted to the tray because the flexible handle and the radial forces generated during swinging motion only pin the liquid into the container more firmly.

Activity Guide Preview

Energy Conversion Kit

Four devices for generating electrical energy from:

• Mechanical motion—hand generator
• Chemical energy—batteries
• Light—solar cell
• Wind—windmill
   

Three devices for using electrical energy to generate:

• Light—LED
• Motion—motor
• Sound—buzzer

Prepared Slide Set, 100 Slides

A very comprehensive selection of prepared microscope slides featuring 24 different subject areas. The set includes slides depicting protozoa, porifera, coelenterata, platyhelminthes, annelida, anthropoda, molluska, echinodermata, pisces, reptila, aves, mammalia, development, bacteria, fungi, algae, ptfridophyta, cells, leaves, stem, root, reproductory organs, cell contents and vascular systems. Recommended for elementary through high schools.

Gel Staining Tray

This polypropylene staining tray helps in staining, fixing, destaining and handling fragile electrophoresis gels and membranes. Tray, as well, as cover will resist temperatures from -70°C to +70°C. The LDPE plug provides a leak-proof seal and allows easy liquid drainage.

Student Electricity Assortment

A convenient, economical package of materials to start investigating electricity concepts.

Assortment includes:

• Six round plastic bulb holders
• Three knife switches
• Six battery holders with fahnestock clips
• 10 fahnestock clips
• One wire stripper
• Three wires with alligator clips, 18”, assorted colors
• Three wires with banana clips, 18”, assorted colors
• 100 feet of insulated copper wire, 22 gauge
• 10 each 1.5 V bulbs