The chefs make a surprise.
Ethelbert meets a hippopotamus.
Lotta's birthday arrives.
The Tombliboos go exploring.
Repeats not indicated
11.00 BBC Primary Geography (ages 7-11) 3752920
11.20 KS2 Science Clips (ages 7-9)
11.30 Telling Tales (ages 7-11) Double bill. 8016543
11.40 Look and Read: Shadow Play - 2. The Girl in Blue (ages 7-11)
Kumali the lion cub has his first inoculation. (Revised rpt)
Presumptions of Guilt. The police question Terri.
10/10. An earthquake hits the UK and causes major damage.
3/26. series four. Murder on Thin Ice. A figure skater kills her rival. (R)
24/75. series eight. A Melksham auction.
The quarter-final stage. Also on the BBC HD channel at 6.30pm
Searching for a property in Oxfordshire. (Revised rpt)
Claudia Winkleman examines the weekend's performances in Choreography Corner.
4/6. In Arctic Footsteps. Ray goes on an epic adventure into Canada's unforgiving yet inspiring northern landscape, following in the footsteps of an unsung British hero who helped put modern
Canada on the map. John Rae , from Scotland, came to be regarded as the foremost authority on indigenous methods of Arctic survival and travel.
Shown on Sunday at 8pm THE BEST TV FORAGER BLOG: radiotimes.com/tv-forager
4/4. The Top Gear man recruits hundreds of volunteers to help him scale up another iconic toy of yesteryear, attempting to build the biggest
Scalextric track in the world at nearly three miles long. His chosen site is the oldest grand prix track in Britain - Brooklands in Surrey - where the circuit will need to wend through people's gardens, overcome ponds and rivers, and traverse a business park.
JAMES MAY PHOTO GALLERY: [web address removed]
Alan Davies embarks on a quest to answer this proverbial question and is soon being turned in knots by leading mathematician Marcus du Sautoy, who explains that the short length of string in question may in fact be infinitely long. When Alan tries to measure his string at the atomic scale, even stranger truths emerge, as 'reality' itself turns out to be quite illusory.
Showing in HD on the BBC HD channel at 10.30pm
Mars: a Horizon Guide is tomorrow at 8pm on BBC4
WHY I LOVE...: [web address removed]
BBC FOCUS MAGAZINE: out monthly, Â£3.60
10/10. The host is joined by David Gray to perform his duet Full Steam with Annie Lennox. The Decemberists, who hail from Portland, Oregon, play from their The Hazards of Love release. Corinne Bailey Rae has an acoustic preview of her 2010 release. Fuzzy electro rock duo the Big Pink showcase their acclaimed debut album A Brief History of Love. And south London's Rox make their debut on the show. An extended version is on Friday at 11.45pm.
Simulcast in HD on the BBC HD channel
BEHIND-THE-SCENES PICS: [web address removed]
With Jeremy Paxman.
Followed by Weather
1/3. Dangerous Ideas. Matt Frei recalls the historic moment when the Berlin Wall fell and reflects on how ideologies have shaped the city. See choice, p50.
Shown on Saturday at 7.30pm The Alison Graham column: page 49
[web address removed]
Repeats not indicated
4.00 GCSE Bitesize Shakespeare 86437
4.30 Literacy - Speakers and Listeners 62760
5.00 Literacy - Powerful Texts