Oats
Mats
Mate
Mote
Mole
Molt
Melt
Meat
Meal

Change "Tale" to "Last".

Tale
Bale
Base
Bast
Last

Change "firs" to "tree".

Firs
Fire
Fore
Fort
Foot
Coot
Clot
Clop
Flop
Floe
Flee
Free
Tree

(That one had me stumped, Rose, but I sorted it out on a drive. )

Change "Play" to "Walk"

Play
Slay
Slat
Seat
Sent
Bent
Belt
Bell
Well
Wall
Walk

Change "near" to "miss".

Near
Neat
Nest
Pest
Past
Mast
Mist
Miss

Change "Moon" to "Suns"

Moon
Boon
Born
Barn
Bars
Bans
Buns
Suns

Change "cube" to "root".

Cube
Cute
Cote
Cots
Coos
Coot
Root

Change "Wind" to "Seas"

Wind
Wend
Send
Seed
Sees
Seas

Change "free" to "airs".

Free
Flee
Fled
Feed
Fees
Bees
Bets
Bits
Bids
Aids
Airs

Change "have" to "knot".

Have
Hate
Hats
Cats
Cots
Coos
Coot
Soot
Snot
Knot

Change "Knit" to "Yarn"

Knit
Knot
Knob
Snob
Slob
Slot
Soot
Sort
Port
Part
Dart
Darn
Yarn

Change "rake" to "snip".

Rake
Bake
Bane
Bank
Bonk
Book
Boot
Soot
Snot
Snit
Snip

Change "rent" to "owns".

Rent
Tent
Tint
Tins
Fins
Firs
Airs
Ails
Oils
Owls
Owns

Change "snug" to "live".

Snug
Snag
Slag
Slat
Seat
Sent
Lent
Lint
Line
Live

Change "mold" to "clay".

Mold
Cold
Colt
Coot
Clot
Cloy
Clay

Change "gran" to "dads".