How to make things glow in the dark ?

Yesterday we did science intensive in room 7 with Mrs Tofa we were learning how things glow in the dark. The materials we needed to use are.

- cup

- water 

- high lighter ink

- tape 

- phone

- purple and blue marker 

1. First we filled the cup halfway with water.

2. We put the highlighter ink inside. the colours were orange , green , yellow and pink

3. Miss card and Mrs Tofa put tape on the camera an colour it purple and blue to make a black light.

4. we went into a dark room and shined the black light to the cup and the cup started to glow.