# Theory - Why do we bet small on dry boards IP ?

Blinds: \$0.05/\$0.10 (6 Players) BN: \$15.82
SB: \$10.67
BB: \$10.00
UTG: \$10.23 (Hero)
MP: \$21.17
CO: \$10.45
Preflop (\$0.15) Hero is UTG with A T
Hero raises to \$0.25, 4 folds, BB calls \$0.15
Flop (\$0.55) 7 Q 3
BB checks, Hero bets \$0.16, BB calls \$0.16
Turn (\$0.87) 7 Q 3 4
BB checks, Hero bets \$0.51, BB calls \$0.51
River (\$1.89) 7 Q 3 4 K
BB checks, Hero checks
Final Pot BB wins and shows a pair of Fours.
BB wins \$1.80
Rake is \$0.09

This is a typical hand that I don't know / don't understand if it's better to:
A) Bet larger flop (60-70%) and bet large again on turn (60-75% again), and depending on the outcome, large bet river.

B) Playing the "bet full range 30~35% on flop", and be called by anything (in this case, villain called 7Q3 flop with 24).

In a flop with no flush draw, when betting small, is it okay to bet turn and give up if called ?
I mean, if I bet large on the flop, the chance of "any2" calling us is reduced by a lot.

And if I had a "Q", wouldn't we prefer to bet 60-70% and be called by worse Q, 7x or his "reduced any2" continuing range?

So why most of the coaches prefer to cbet 30-35% on dry boards IP ?
Wouldn't betting large generate more fold equity when bluffing and at the same time more value when with a made hand?