A page-turning mystery brimming with lighthearted intrigue and essential middle-grade math skills, Math Mysteries: The Triplet Threat by author Aaron Starmer will have readers on the edge of their seats as they unravel the who-done it using math. Perfect for both mystery and math lovers, as well as kids who love puzzles, riddles, brainteasers, and adventure stories! It's the first day of the fourth grade at Arthimos Elementary and things are already off to a strange start--poisonous cookies, a zipline disaster, a missing iPad, and what are those strange sounds coming from the school custodian's wheelbarrow? Luckily the Prime Detectives--Abby “the Abacus” Feldstein, Cameron “Cam” McGill, and Gabriel “Gabe” Kim--are on the case! Using arithmetic, geometry, and logic, the Prime Detectives are sure to figure out who did what, when, and why! A gripping new middle grade mystery series, each book contains multiple, interlinked mysteries that readers help solve using math. Includes answers showing step-by-step solutions.

All five books in 'Triple Threat Mysteries', a series of cozy mystery novels by Tyler Colins, now in one volume! The Connecticut Corpse Caper: A week-long stay in a creepy oversize Connecticut mansion is replete with hidden passageways, disappearing and reappearing corpses, and seven quirky inheritance recipients. Soon, people start dropping like flies. Donning amateur sleuth caps, Jill and her associates, Rey and Linda, attempt to solve the mystifying murders. Soon, others jump in, and the bumbling, stumbling and mayhem begin. Can You Hula Like Hilo Hattie?: The novice sleuths accept their first official detecting assignment: uncovering the “secret" of an elderly millionaire’s pretty young wife. If they succeed, their newly founded business, The Triple Threat Investigation Agency, will prove a viable venture. But after the wife is found murdered along the sapphire shores of Oahu, the sleuths discover that the deceased woman was not the only one keeping secrets. But who is the murderer? Coco's Nuts: The Triple Threat Investigation Agency private eyes undertake their second major assignment: proving their client, once-socialite-Vassar-grad-turned-trucker Buddy Feuer, isn’t responsible for two murders. She had no motive to kill her boss, infamous entrepreneur Jimmy Picolo, nor did she murder her best friend, Eb Stretta. As the rookie P.I.s strive to uncover a killer amid yet another cast of curious and unconventional characters, they meet up with old acquaintances who may or may not have their best interests at heart. Forever Poi: The ever-proud owners of the Triple Threat Investigation Agency—JJ, Rey, and Linda—have a new case. Who set ablaze two happening Chinatown art galleries, leaving a couple of charcoal-broiled corpses in the rubble? Any number of curious characters in the local art world could be responsible, including a haughty gallery owner with a questionable past and an art consultant living on the edge. If only the gals can figure out the "why", they'll have their "who". Ha-Ha-Ha-Ha: The pretty P.I.s from the Triple Threat Investigation Agency have a new case, thanks to a serial killer who has taken a serious interest in them. The GrimReaperPeeper has challenged them to “play the game”, by his rules. Rules are made to be broken, however... or, at the very least, changed. As the trio attempts to determine who he killer might be, they also need to tackle a couple of other cases, including verifying whether a hubby has a roving eye and ascertaining who is stalking a young, beautiful woman. But can the cases be somehow intertwined?

The first three books in the 'Triple Threat Mysteries' series by Tyler Colins, now available in one volume! The Connecticut Corpse Caper: A week-long stay in a creepy mansion in Connecticut turns into a hair-raising experience for seven quirky inheritance recipients. Hidden passageways, disappearing corpses, and a ghost named Fred all contribute to the suspense. The will stipulates that if a guest leaves early, their share of the inheritance will be divided among those remaining. Soon, people start dropping like flies. Jill and her associates, Rey and Linda, don their amateur sleuth caps to solve the mystifying murders. Can You Hula Like Hilo Hattie?: The Triple Threat Investigation Agency works their way through a tangle of motives and suspects, including a Hawaii-based preacher man, an incredibly handsome photographer, and a not-so-grieving widower. They encounter threats and shootouts, secrets and lies, as they inch closer to the truth. With the body count mounting and time running out, can they unmask the killer before they become the next victims? Coco's Nuts: The sleuths are investigating the murders of Jimmy Picolo and Eb Stretta, determined to clear their client Buddy Feuer's name. As they delve deeper into the case, they encounter a colorful cast of characters and uncover more puzzling clues. The stakes are high and danger lurks around every corner, and the explosive bombs that threaten their safety are just the beginning. As they get closer to the truth, the Triple Threat gals find themselves in increasingly precarious situations, and they begin to suspect that they may have stumbled upon something much bigger and more dangerous than they initially thought. With so many suspects and so few leads, can they uncover the truth?

Stories and activities to build math problem-solving skills.

Students are encouraged to think like math detectives and to integrate problem solving with numbers and operations to solve mystery problems.

Books 4-5 in the 'Triple Threat Mysteries' series by Tyler Colins, now available in one volume! Forever Poi: The indomitable trio of private investigators, JJ, Rey, and Linda, embark on a fiery new case in the vibrant streets of Chinatown. Tasked with unraveling the mystery behind the devastating arson that reduced two esteemed art galleries to ashes, leaving charred bodies in its wake, the determined investigators find themselves immersed in the enigmatic world of the local art scene. With a plethora of intriguing suspects, including a haughty gallery owner, a daring art consultant, and an aspiring manager with a shadowy past, the Triple Threat Investigation Agency must navigate a labyrinth of motives. Was it fueled by a desperate desire for a hefty insurance payout, a bitter fallout in a tumultuous relationship, a thirst for revenge, or an elaborate cover-up? Ha-Ha-Ha-Ha: The fearless and fabulous trio of private investigators, JJ, Rey, and Linda, find themselves entangled in a dangerous game orchestrated by a twisted serial killer known as the GrimReaperPeeper. With their lives on the line, they are determined to bend the rules and rewrite the game in their favor. As they strive to prevent more lives from being claimed, they also find themselves immersed in other intriguing cases, including a suspected cheating husband and a mysterious stalker targeting a young woman. In a thrilling race against time, the lines between the cases blur, and the stakes become higher than ever. Will these seemingly unrelated investigations converge, revealing a shocking truth? And who will emerge victorious in this deadly battle of wits - the cunning killer or the resourceful private eyes?

Who doesn't love a mystery? Students will have a blast reading the adventures of kid detectives Zara and Mendel and their dog, Digit, and helping them solve intriguing math puzzlers along the way. In this collection of comical mysteries, students meld reading strategies, such as text marking, with essential math skills to tackle real-world problems. A delightful way to practice whole-number computation, fractions, measurement, geometry, algebraic reasoning, and so much more!