DE29900928U1 - Device to help you learn and practice multiplication tables - Google Patents

Description

Description

The larger disc bears the following series of numbers and symbols:

Front; &khgr; 2, &khgr; 3, &khgr; 4 ,&khgr; 5, &khgr; 6, &khgr; 7, &khgr; 8, &khgr; 9, &khgr; 10, &khgr; 11, &khgr; 12 xl2,xl3,xl4,xl5;?cl6,xl7,xl8,xl9,x20.x21,x22,.x25

Back: Child-friendly symbols that mark the multiplication tables and are intended to make it easier for the student to see which column of tasks he or she has already worked through.

2. Math - Ace according to protection claim 1

Problem : The invention specified in claim 1 is based on the problem of offering students a concrete calculation aid and basic knowledge for arithmetic operations, which should enable them to resort to and use multiplication tables in calculations.

Achieved benefits: By using the invention, the student practices selected

Times tables that he memorizes through constant repetition, automates and can later use in all arithmetic operations without help. This makes him adept at arithmetic, gets better grades and thus enjoys the subject of "mathematics" more. At the same time, the disc is designed in such a way that the student can compare (read) the solution to the problem on the front in the same color circle on the back.

At the same time, he can calculate the reverse task (division = test) of the task on the front on the back and thus check his result in the corresponding color circle on the front. Due to this concept, the Math Ace contains two types of arithmetic operations, namely multiplication and division with corresponding solutions.

Specifically : On the front side, for example, in the red colored circle segment, the following task can be found (see Fig. 1):

6x12 = ?

In the window on the back (see Figure 4), the student can read the solution 72 in the number circle of the same color after completing the calculation. At the same time, he can now use this number to calculate the reverse task (test) to check his result: because 72:6 = 12

He finds the solution (12) again in the window on the front (red circle) (see Fig. 1)

Further development of the idea:

The invention (disc) is expanded in such a way that the inner disc is interchangeable and can be replaced by topics from other areas (German, mathematics, general studies, music, foreign languages). The disc appears in all European languages and countries.

However, the cover of the disc with the swivel bracket and the eyelets always remains unchanged.

Description:

Figure 1 shows the assembled multiplication table disc: 2 discs with the radii &khgr; and &khgr; + 1.3 cm with cut-out sectors (cut-outs) in the outer disc, each of which only allows a view of the number ranges. The inscription "Multiply" and the eyelet attachment for hanging in ring mechanisms can be seen on the outer line of the cut-out.

Figure 2 shows the front of the inner pane, on which the subject areas (multiplication tables) on the front (see claims) are listed.

Figure 3 shows the back of the inner pane, on which the rows of numbers with symbols on the back (see claims) can be found.

Figure 4 shows the back view of the multiplication table disc (heading: Divide)

Claims (5)

Klaus Aßfalg »/ Fax: 07352-3737 Vonierweg 2 88400 Biberach-Ringschnait 23 April 1999 Protection claims 1) Device to help learn and practice the multiplication tables (Math Ace) characterized in that 1. two discs with a radius of &khgr; (inner disc) or &khgr; + 1.3cm (outer disc) can be rotated against each other and are connected to each other in the center by means of a colored rivet 2. the outer disc has a sector or rectangular cutout that allows a view of the multiplication tables on the inner disc 3. the outer pane has a kind of rotating handle (holding bracket) on the upper edge of the cutout, which allows the pane to be easily rotated against the other (Figure 1) 4. there are 2 eyelets with a minimum diameter of 4 mm on the rotating handle of the outer disc, spaced 8 cm apart (Fig. 1), with which the disc can be hooked into any standard ring mechanism of a ring binder or folder and thus stored safely 5. the inner disc shows various multiplication tables (Figure 2), each of which fills a (rectangular) sector section