The invention relates to a holding device (1) of a kindergarten experiment system (2) for scientific experiments comprising: a first stand post (3) with a first end (4a) with a first threaded section (11) and a second end region (4b) with a second threaded section (16), a terminating rod (7) with at least one statements versus threaded section (29), which for the completion of the first stand post (3) at its first end (4a) is provided, wherein the first stand post (3) and the terminating rod (7) by means of the second threaded portion (16) and of the statements versus threaded portion (29) to be detachably connected to each other, further comprising at least one holder (5) with a first recess (25) for its attachment which is detachably connectable to the or the threaded sections (11, 29) of the stand post (3) or of the terminating rod (7) connected between the first stand post (3) and the terminating rod (7) and detachably fixed to hold a experimental apparatus (30, 32) is adapted. The present invention also relates to a kindergarten experiment system (2) comprising: a experimental tub (35) with at least one recess (41) formed therein for receiving a first or of an at least a second threaded portion (3, 3 '') of a holding device (1).
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