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What Rock Is It? Class ProjectWhat Rock Is It? Class Project
What Rock Is It? Class Project
12046

In this step-by-step classroom project students examine and identify individual rock specimens. As each rock specimen is examined and identified, students progress toward the completion of their own rock reference charts. The Teacher's reference chart uses illustrations and actual specimens for students to consult as they identify unlabeled rock specimens. For grades 6-12.

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$124.95 Set
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Xpandit® Expandable BarricadeXpandit® Expandable Barricade
Xpandit® Expandable Barricade
SS041D

• Lighter and more attractive than your old metal barricades
• Redirect traffic in unsafe and risky conditions
• Designed to warn and maintain a safe and friendly environment
• Easy to handle, store, and does not rust.
• Its durable recycled material allows for a sturdy and lasting effect
• 37" high and expand from 16.5" to 11.5'
• Requires minimal assembly
• weighs only 15 lbs. so it's easy to move from one location to another
• Mainly for indoor use

Replace your old metal barricade with the newest, latest, and greatest, plastic expandable barricade, XpanDit". XpanDit" will redirect traffic in unsafe and risky conditions and is designed to warn and maintain a safe and friendly environment. The XpanDit" is easy to handle, store, and does not rust. Its durable recycled material allows for a sturdy and lasting effect, and it is di-electric and heat resistant. Barricades are 37" high and expand from 16.5" to 11' 5" to accommodate nearly any space. Requires minimal assembly and weighs only 15 lbs. so it's easy to move from one location to another. Mainly for indoor use.

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$239.00 Each
Yacker Tracker
Yacker Tracker
SA023P

Equipped with longer lasting LED lights eliminating the need for replacement bulbs. Features 2-second delay before the optional siren sounds preventing false alerts resulting from sudden noises. Acceptable levels of noise can be adjusted for quiet activities or louder for group work.

Nursery schools with hearing impaired students can use the unit as a visual signal. Drama departments can incorporate this unit as a quiet signal to alert backstage cast members of inappropriate offstage noise.

Other features include: voice activation (“Quiet Please”) or siren options; Automatically or manually adjustable lights; Decibel sensitivity control (from 50dB to 110 dB); Self-standing or wall-mountable; Powered by a 120V AC adapter (Included) or 6 AA batteries, sold separately. Optional face stickers for lights.

Product Features

  • Traffic light is approximately 17″ high.
  • Unit plugs into AC 120 volt electrical outlet with included UL approved transformer (Input: 100-240V AC 50-60Hz, Output: 9V DC 500mA) or can be used with 6 AA alkaline batteries (sold separately).
  • Unit can be self-standing or wall-mounted.
  • Traffic light is computerized with adjustable sound level meter.
  • Red light counter registers each time the red light activates. Push reset button to reset counter to zero.
  • Decibel sensitivity control can be set to operator’s choice. Push button to decrease sensitivity. Also offers manual operation option of staying on a given light color.
  • Option face stickers provided to add the element of emotion to the lights.
  • Green light stays lit until noise in room goes above set level (determined by user, green light is replaced with a flashing yellow light as a warning.
  • When sound level reaches 15 dB above set level, the red light and siren are activated.
  • Voice Commands (“Quiet Please” in 4 languages or create your own recording) and siren options.
  • User has the option of turning sounds on or off.
  • Delayed Alarm Function will sound when noise continues for more than 2 seconds.

 

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$156.50 Each