Theme: DO THE MATH
18. Math teacher's favorite sport? : TIMES TABLE TENNIS
31. Math teacher's favorite brew? : SQUARE ROOT BEER
47. Math teacher's favorite hat? : PIE CHART TOPPER
62. Math teacher's favorite cut of beef? : PERFECT CUBE STEAK
Melissa here. Two grid-spanners, and a few tricky clues made this a satisfying solve. When I first saw TIMES and SQUARE, I was looking for a theme about New York. Nope.
Across
1. Like most cookies : BAKED
6. Director of the final episode of "M*A*S*H" : ALDA
10. Food inspector's concern : E-COLI
15. Jazz singer O'Day : ANITA
16. Osso buco meat : VEAL. Italian for "bone with a hole," braised veal shank.
17. Swerved at sea : YAWED
21. Diplomatic bldg. : EMB. Embassy.
22. Flying off the shelves : HOT
23. Praise to the heavens : EXALT
24. Rock's Grateful __ : DEAD
26. Fiat fuel : GAS
28. Perspire nervously, say : REACT
36. Arrowhead Stadium NFL team : CHIEFS
36. Arrowhead Stadium NFL team : CHIEFS
38. Mark for deletion : X OUT
39. Sellout sign letters : SRO
40. Very confident : CAN DO
41. Chanel competitor : DIOR
42. Museum worker : GUARD
44. 1869-'77 pres. monogram : USG. Ulysses S. Grant. "I have never advocated war except as a means of peace."
45. Place for private dining? : MESS. Great clue - see 6-Across.
46. New York hockey team : SABRES
51. Bathtub outlet : DRAIN
51. Bathtub outlet : DRAIN
52. Product prefix suggesting winter : SNO. Or sugar.
53. Activist Parks : ROSA
56. Minds someone else's business : PRIES
59. Slice of history : ERA
61. Old conductance unit : MHO
67. As scripted : ON CUE
67. As scripted : ON CUE
68. World Golf Hall of Famer Isao : AOKI
69. Cosmic comeuppance : KARMA
70. Gives a hand, in a way : DEALS
71. Editorial override : STET. Latin for "let it stand."
72. Hog caller's call : SOOEY
Down
1. With __ breath : BATED
Down
1. With __ breath : BATED
2. Japanese art genre : ANIME
3. "L.A. Confidential" Best Supporting Actress Oscar winner : KIM BASINGER
4. Bastille Day time : ETE. French Summer.
5. Short run : DASH
6. Gamer's game face : AVATAR. Another great clue.
7. Syr. neighbor : LEB
8. Half a chipmunk team : DALE
9. "Roots" author Haley : ALEX
10. Shoelace hole : EYELET
11. Cambridge student, informally : CANTAB. Short for Cantabrigian.
12. Have title to : OWN
13. Luau loop : LEI
14. TSA requests : IDS. And shoes.
19. Roman robes : TOGAS
20. Major Arcana deck : TAROT
25. Kicked out of the game, informally : DQED. Disqualified - boxing.
27. Gender-specific, to some : SEXIST
29. The Joker portrayer on TV : CESAR ROMERO
30. __ Haute : TERRE
32. Many a tabloid pic : UFO
33. Fowl poles? : ROOSTS
34. Possessive word : OUR
35. Fishing gear : RODS
36. Lingerie size : C CUP
37. Member of a strict Jewish sect : HASID
41. Article written by Marx and Engels? : DER
42. Break : GAP
43. App offering fare estimates : UBER
45. Wildly excited : MANIC
46. Future fern : SPORE
48. Downy amount : CAPFUL
49. New faces around the water cooler : HIREES
50. In the slightest : ONE BIT
54. Disgrace : SHAME
55. Fine : A-OKAY
57. Flight sked data : ETAS
58. Many a bagpiper : SCOT
60. Wants to know : ASKS
62. Sci-fi escape vehicle : POD. Not UFO.
63. St. Louis-to-Indianapolis dir. : ENE
64. Label for Elvis : RCA
65. Hula strings : UKE
66. Lao Tzu ideal : TAO