Easy Pop Up Christmas Card - Paper Fan Christmas Tree Cards. Working with concertina paper folding techniques, this is a quick and easy card to make for the holidays. traditional Christmas Tree and white Winter Tree Card versions.
Why do we add S to some words but ES to others? And when a word ends with Y, how do we know whether to change the Y to I before adding the plural suffix? And why on earth does knife become knives? You can unravel these mysteries with six simple rules.