Fundations Prefixes

PrefixesIntroduce New Concepts:Letters added to the beginning of a base word are called a prefix. Children should understandthat adding a prefix to the beginning of a base word changes the meaning of the base word.Sometimes the meaning changes a great deal. Sometimes the meaning changes only a little.For example:un + lock = unlock(prefix)(base word)By adding un to lock, the meaning changed a lot. Now, instead of meaning to fasten somethingtightly, the word means to open something up.Also:un + tie = untie(prefix)(base word)And:un + certain = uncertain(prefix)(base word)Week oneThe following are prefixes (and their meanings) that may be taught during week one:pre - beforepost - afterun - not/oppositedis - not/oppositemis - bad/badly/wrongWeek two:re - back/againin - not/ in/ intoex - out

Week 1: Current Words: Prefixespre = before un = not/ mis = bad/ badly, wrongprefixpreschoolpreheatprecutpreplanprepaidprepareprehistoricpreferpredictablepredawnprefabprefabricatepreshrunkpreventiveprescribepreservepresentunskillfulunseenunwrapunpredictableunfairnessunevenunselfishnessuneasinessunavailableunteachableunrepentantunlawfulunfurlunmovableunsuitableunreadableunpardonableunmistakableunshakenunthoughtfuluntarnishedunwrinkledunusableunrewardedunthawedmistakemislaidmisbehavemisprintmisleadmisspellmishapmiscalculatemisconductmiscountmiscuemisdeedmispronouncemisshapenmisstepmisusemiscommunicatemisidentifymisdirectmisguidemisfilemisunderstandingpost = afterpostseasonpostponementpostponepostdatepostscriptdis = not/ oppositedismissdispleasedislikedisobeydisappeardiscountdiscarddiscontentdisapprovaldiscreetdisposedisposabledisagreeabledisarray

Week 2: Current Words: Prefixesre -= back/ again in = not in/into ex = outrepayreplantrefrainreflectrecoilremarkablerepulsiveresistantrespectfulrepentantreverseremovablereloadrethinkrebuildrefreshrenewrenewableredundantinhumaneinformalineffectiveinoffensiveindiscreetincompleteindependentinsertinspireinquireindentinformindentedinvestmentinfiltrateintrinsicindustryinflateinfestinvestigateintrudeincubateinformantinformativeexpensiveexpelextremeextendexportexploitexpressiveexhaustexhaustiveexplainexclaimedexterminateexcavateexcludeexcuseexhaleexpandedexpansiveexplodeextendedexhilarateexileexistexistence