Educational book covers

An educational book cover comprising:

• a spine;
• a cover member pivotally coupled to the spine and having an outer face;
• and
• a pull mechanism attached to the outer face of the cover member and including:
• a track pivotally coupled to the outer face;
• and
• a knob movingly supported within the track and configured to selectively translate relative to the track to modify the spacing between the knob and the spine;
• wherein the track projects above the outer face and mechanically links the knob to the cover member to transfer pulling force exerted on the knob to the cover member;
• wherein more force is required to pivot the cover member relative to the spine by pulling the knob when the knob is selectively translated within the track closer to the spine than when the knob is selectively translated within the track farther from the spine.

An educational book cover comprising:

• a spine;
• a cover member pivotally coupled to the spine and having an outer face;
• and
• a pull mechanism attached to the outer face of the cover member and including:
• a track coupled to the outer face and defining fixed pull positions along the length of the track;
• a knob movingly supported within the track and configured to selectively translate relative to the track to modify the spacing between the knob and the spine, the knob being complementarily configured with the track to selectively rest within the fixed pull positions;
• wherein:
• the track projects above the outer face and mechanically links the knob to the cover member to transfer pulling force exerted on the knob to the cover member;
• more force is required to pivot the cover member relative to the spine by pulling the knob when the knob is selectively translated within the track closer to the spine than when the knob is selectively translated within the track farther from the spine;
• the cover member includes unique indicia aligned with each fixed pull position to identify and differentiate the fixed pull positions for educational purposes;
• the fixed pull positions are each defined by a notch defined in the slot;
• the neck and the notch are complementarily configured to enable the neck to extend into the notch;
• and
• the notch restricts the knob from translating in the track when the neck extends into the notch.