Interaction of amine and polypeptide hormones and cell receptors Animation Play

Interaction of steroid hormones and cell receptors Animation Play

Interesting fact Animation Play

Interesting facts about the calendar Student activity Play

Interesting facts about the calendar Whiteboard exercise Play

Internal fertilization Animation Play

Invention of the voltaic cell Animation Play

Inverse operations Student activity Play

Isolation of DNA from other cell structures Animation Play

Junction between an antigen and a helper T cell Whiteboard exercise Play

Lena's expenses Whiteboard exercise Play

Leucocytes – always ready to fight Student activity Play

Levels of cell organization in the organism Slideshow Play

Lichens (division Mycophycophyta) Whiteboard exercise Play

Lichens (division Mycophycophyta) Student activity Play

Life processes in plants Student activity Play

Light microscopy – magnifying the object Student activity Play

Light microscopy – magnifying the object Whiteboard exercise Play

Lipids – the energy source of the cell Whiteboard exercise Play

Lipids – the energy source of the cell Student activity Play

Long division Animation Play

Long division Animation Play

Long division by a rational divisor Student activity Play

Long division by an integer divisor Student activity Play

Long division by an integer divisor Whiteboard exercise Play