"Janitorial Supplies"

Digital counter/timer for measuring duration of motion, transition times, periods, pendulum periods, frequencies, as well as for counting events or Geiger tube pulses. Includes a speaker that can be turned on and off, and power supplies for direct connection to light barriers. For event counting, a fixed counting period can be programmed in a range from 0.1ms to 99999s. Counter events (e.g. start or stop) can either be triggered by a signal to the input sockets or manually via switches. The unit includes a plug-in power supply.

This STEM-based curriculum kit accents the scientific method and independent inquiry featuring hands-on learning materials and exciting interactive digital content that can be accessed on a computer, tablet, or mobile device.

Basic variety of measuring tools with guides and activities.

WARNING: CHOKING HAZARD - Children under 8 years can choke or suffocate on uninflated or broken balloons. Adult supervision required. Keep uninflated balloons from children. Discard broken balloons at once. (2) Item contains latex, which is known to cause allergic reactions. Use with caution.

Demonstrate the Relation of Length, Area, and Volume

A perfect cubic decimeter box that contains exactly 1 liter. Can be used to demonstrate the metric relationships among linear, volume, one and mass measurements.

Compact function generator