Demonstrative Adjectives

This and These are things "close" to the speaker, something within the range of touch. That and those are things "distant" from the speaker, outside the range of touch. Touch has a "T" in it.
Things you can Touch Things over there
this (singular masculine) este ese that (singular masculine)
this (singular feminine) esta esa that (singular feminine)
these (plural masculine) estos esos those (plural masculine)
these (plural feminine) estas esas those (plural feminine)