You can hear a pin drop inside a grade four class in Gimli, Manitoba. Kids racing to fill in as many math answers as they can. It’s something they do most days in this class  - part of a style of teaching math that’s new to this school. A math teaching strategy that’s trying to rectify some really low test results in the district. Staff say it’s working. Big time. But as Julia Pagel discovered, how math is taught can be surprisingly controversial. And with math scores on a downward slide for the past two decades, many across the country, and around the world, are determined that we finally get it right.

CFB Gagetown is known as the "Home of the Army" because nearly every Canadian soldier passes through for training.But some veterans say their time at Gagetown led to long-lasting illnesses from toxic chemicals sprayed there decades ago.And yet Gagetown has never been more important to Canada’s military future. This year, Ottawa announced more than a billion dollars to modernize the base. Andrea Hoang visited Gagetown in May to examine how this legacy still touches lives today, and why some veterans feel the government is investing in the future without reckoning with the past.

The stench in St. Mary’s, Newfoundland gets so bad sometimes, it can take your breath away. The culprit? More than 100 giant, leaking vats of fermenting capelin in an old abandoned fish sauce plant, right in the centre of town. For years, residents pleaded for help to clear the vats out. But it took an unexpected turn to finally get some relief. When CBC’s Mary Catherine McIntosh went to St. Mary’s, she found a town fighting a 25-year stench - and then tracked down the man who caused it.

Storylines brings you beyond the headlines and deep into someone else's world.And, we’re about to launch a whole new season! Where you'll meet people who are trying to create change, struggling through challenges they’d never thought they’d have to face, and describing conundrums you can hardly imagine. Subscribe now, so you don’t miss an episode. 

For Daniel Mergler, music was one of the true joys in life. He taught children to play piano for 50 years, and took his job very seriously. So when 9 year old Zin Ben showed special talent, a shot of excitement went through the aging teacher. This talent needed to be cultivated. Care must be taken. But, when Mr. Mergler was given a palliative diagnosis after his colon cancer spread, he found that it was now Zin Ben’s turn to offer him some care and comfort. From our special summer archival doc series - this is David Gutnick’s doc from 2003 Beethoven's Bust

When Jillian Hadley burst from her home, she was clutching her baby, and she was naked. She was screaming for help, trying to escape the grip of a man. The man was her estranged husband. He was under a court order to stay away from her. A few brave neighbours tried to help the woman, but on that Tuesday 26 years ago, 34-year-old Ralph Hadley shot and killed Jillian Hadley and then killed himself. In 2001 Karen Levine set out to talk to those neighbours. For our special archival doc summer series, This is her Peabody award winning documentary … 'A Murder in the Neighborhood.'

It has been more than 30 years since the Siege of Sarajevo in Bosnia began. As the former Yugoslavia was falling Serb forces surrounded the city of Sarajevo, and bombarded the city daily. For nearly four years mortars and snipers gradually reduced the capital to ruin and its citizens to despair. It's believed nearly 12,000 people were killed and many were children. Lara Obrien traveled to Sarajevo in 2012 and became fascinated with some of the stories of survival during the siege and particularly how music became a lifeline.From our special summer archival doc series, this is Lara Obrien’s documentary, The Art of War 

In October of 1984, a plane crash in northern Alberta led the newscasts. The leader of the Province’s New Democratic Party – Grant Notley - died in the accident along with five others. Four more had survived, but spent a cold, desperate night waiting to be rescued. They had little in common besides the fact that they lived when others did not. The then provincial housing minister, Larry Shaben was one of those survivors. His daughter, Carol Shaben, wrote a book about the experience called Into the Abyss. It traces how the crash shaped the lives of those four men.In 2012 CBC’s Liz Hoath spoke to the author and to the two remaining survivors for her documentary. For our special summer archival doc series here is - The Wreckage of Flight 402

Mother Antonia lived in a prison, but she had not committed a crime. The Catholic nun chose to live inside the walls of a notorious Tijuana prison voluntarily. It’s something she did for decades. She believed everyone deserved to be loved. And her presence there made her a legend. From our special archival doc summer series, this is Joan Webber’s 2007 doc - Faith Inside the Walls. 

When Kevin Hollinsky and his two friends got in the car that night, they had the music turned up. They were normal teenagers, coming home from a night out drinking.But when Kevin took a corner too fast, his entire world changed. He killed his friends Joe Camlis and Andrew Thompson. Kevin survived.Kevin Hollinsky was convicted of dangerous driving that caused the death of two of his passengers. The expectation of some in 1995 was that he would do time for the crime. But instead the young man from Windsor Ontario received a sentence which some thought revolutionary. He was given an alternative sentence of community service. A sentence, which proved anything but lenient.From our special archival doc summer series, this is Bob Carty’s Peabody award winning documentary Kevin’s Sentence