Check our numbers guide to Saturday's game
To those who went to school in a draughty old hall and scratched out their essays using a chalk and slate, the three R's meant reading, writing, and arithmatic. But to Neil Harris heading north to Bolton this weekend, it would probably stand for relish, retribution and reward.
After a scintillating performance against Bristol Rovers, the Millwall manager will be relishing a meeting against fourth-placed Bolton, whose form has recently developed a distinctly vulnerable look to it.
Wanderers looked to be cantering towards an automatic promotion spot with seven wins on the trot before back to back losses against Cheltenham in the Checkatrade Trophy, and Peterborough in the League pulled them up sharply.
The Lions on, the other hand, have won their last five encounters and will be heading north brimming with confidence, but also aiming to exact retribution for the last three encounters with Bolton, each of which has seen Wanderers claim maximum points. In fact, you would have to go back to October 2012 for the last time Millwall got the better of their northern opponents.
All in all, Bolton have a slim historical advantage. Phil Parkinson's team have won 18 out of the 42 previous encounters, while The Lions have taken the points in 16 games, with eight matches ending in a draw.
The ink is barely dry on the match report from the last encounter barely four weeks ago. On that occasion, The Lions fell victim to the curse of the 'early goal' which had dogged them in previous games. This time round it was Sammy Ameobi doing the damage with less than three minutes on the clock. A sharp turn on the edge of the box and a thumping strike into the top corner of the net gave Jordan Archer no chance.
The Lions attempted to strike back immediately with Steve Morison threatening the Bolton goal on several occasions but all to no avail. Despite long periods of Millwall possession, it was Bolton who put the game out of reach four minutes from time when towering defender David Wheater slotted the ball home through a tangle of players.
A month is a long time in football and the League One landscape has changed significantly since that encounter.
Chopper will hoping to be rewarded with three points from tomorrow's game but the bonus ball from a successful outcome may well be a richly-deserved return to the Play-Off positions.
Millwall are the 9/4 outsiders with Sky Bet to make it six wins on the spin with Bolton priced up as the 5/4 favourites for the victory and the draw on offer at 23/10.
The Lions beat Bristol Rovers 4-0 last weekend and a repeat of that scoreline is, not surprisingly, priced up at a massive 80/1 by Sky Bet.