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Geometric Demonstration Tray

Geometric Demonstration Tray

Regular price $57.06 USD
Regular price Sale price $57.06 USD
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Geometric Demonstration Tray
Regular price $57.06 USD
Regular price Sale price $57.06 USD
Tax included. Shipping calculated at checkout.

The geometric demonstration tray contains insets and frames for the three basic geometric shapes: circle, square and triangle and three blank wooden squares. Demonstration tray is used with the cabinet to introduced plain geometric shapes in isolation.


This item can be used in conjunction with A104 Cards For Geometric Demonstration Tray.


Wooden tray containing six wooden squares, three of which have insets: the triangle, the square, and the circle.

These insets are painted blue in contrast to the natural wood finish of squares. The geometric figures contain a small knob in the center to remove the figures from the tray.


1 Invite the child to work with the 'geometry demonstration tray'.

2 Show the child where the geometry demonstration tray is located on the shelf.

3 Indicate procedure for carrying the material: a hand on each side of the tray, thumbs on top, fingers underneath.

4 Place the tray on a table or rug.

5 Say, "After I remove the insets, I will match each inset to it's frame."

6 Remove each figure, indicating to the child how each knob is to be held between the thumb, index, and middle fingers of the dominant hand.

7 As each figure is removed, beginning at the left and proceeding to the right, place the figures in order in front of the tray.

8 With the dominant hand, grasp the figure to the left by the knob. With index and middle fingers of the subdominant hand, moving clockwise, trace the edge of the figure. Select the frame in the demonstration tray that matches. Trace the frame and insert the inset. Continue until all figures have been replaced into their proper frames.

9 Return the material to the shelf in the manner indicated in step #3.

Note: Square, circle, and triangle is the sequence of figures in the demonstration tray.

Control Of Error

Each inset will properly fit only in it's proper frame.

Points Of Interest

Some figures turn in their inset when rotated, some do not. Some figures can nest in the frames of other figures.


Development of visual discrimination of shape.

Development of concentration, coordination, and independence.

Responds to the sensitive need of order in the child.

Preparation for writing.

Preparation for geometry.

Development of tactile sense.

Introduction to plane geometry nomenclature.


Mixed Order: Proceed as in Presentation 1 through step #6. Place all three insets on the rug in mixed order. Have the child replace them in proper order.

Three Period Lesson: Proceed as in Presentation 1 through step #6. Introduce names of the shapes with the Three Period Lesson.

Other Shapes: Introduce all shapes in the geometric cabinet using the demonstration tray and proceeding as in Presentation 1. Select groups of three figures of highest contrast. After the sensorial experience, introduce vocabulary.

Main Material


What you cover in your shipping policy and how you communicate it will be highly dependent on your current business operations and supply chain. The goal is to be transparent with customers.

As 2020 brings unforeseen shipping delays and increased carrier costs, it's more important than ever to keep your shipping policy up to date with the following key points in mind:

  • Essential shipping details are easy to find. While it is common practice to keep a link to your shipping policy page in the footer of your website, consider how you can also surface important shipping details in the right place at the right time (e.g. on your product page or website banner).
  • Clear and concise presentation. Don’t make customers comb through your shipping policy page for the information they need. Whenever possible, make it easy to navigate with clear subheadings, tables, bolded text, and links to learn more.
  • Order processing times. After an order is placed, how many days will it take to get it ready to ship? It’s worth communicating if you’re excluding weekends and/or holidays, and if you have certain cutoff times for processing orders (e.g. orders received after 5pm will be processed the next business day). If changes occur within your supply chain, due to peak periods or as a result of COVID-19, you should update your processing times to reflect it.
  • Domestic and international shipping options. What are the qualifying regions for your domestic shipping options? International shipping can be broken down in its own section where you list the countries you ship to and estimated delivery timelines. If you offer several shipping options, you can list them in a table so the information is easy to scan. Shipping costs. Break down your shipping costs for the customer. If you have a free shipping threshold, you can communicate in various places as an incentive for customers. Any potential surprise fees should be surfaced too, such as duties and taxes the customer may incur.

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